Added descriptions to all Contributor Experience subprojects (#3949)

* Added descriptions to all Contributor Experience subprojects.  These are my own interpretation based on the files owned by each subproject, and as such need revision and editing.

* Make changes requested by @paris to descriptions.  Generated new SIG files.  Ready to merge.

* Merge master changes to sigs.yaml.

2 files changed, 36 insertions, 0 deletions

diff --git a/sig-contributor-experience/README.md b/sig-contributor-experience/README.md
index 3d54b595..2eb26fe7 100644
--- a/sig-contributor-experience/README.md
+++ b/sig-contributor-experience/README.md
@@ -52,25 +52,30 @@ subprojects, and resolve cross-subproject technical issues and decisions.
 
 The following [subprojects][subproject-definition] are owned by sig-contributor-experience:
 ### community
+Owns and manages overall community repo, including community group documentation and operations.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes/community/master/OWNERS
 ### community-management
+Manages operations and policy for upstream community group communication platforms.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes/community/master/communication/OWNERS
 - **Meetings:**
   - APAC Coordinator Meeting: [Thursdays at 5:00 UTC](https://docs.google.com/document/d/1qf-02B7EOrItQgwXFxgqZ5qjW0mtfu5qkYIF1Hl4ZLI/edit) (biweekly). [Convert to your timezone](http://www.thetimezoneconverter.com/?t=5:00&tz=UTC).
 ### contributors-documentation
+writes and maintains documentation around contributing to Kubernetes, including the Contributor's Guide, Developer's Guide, and contributor website.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes-sigs/contributor-site/master/OWNERS
   - https://raw.githubusercontent.com/kubernetes/community/master/contributors/guide/OWNERS
 - **Meetings:**
   - Non-Code Contributors Meeting: [Wednesdays at 11:00 PT (Pacific Time)](https://docs.google.com/document/d/1gdFWfkrapQclZ4-z4Lx2JwqKsJjXXUOVoLhBzZiZgSk/edit) (biweekly). [Convert to your timezone](http://www.thetimezoneconverter.com/?t=11:00&tz=PT%20%28Pacific%20Time%29).
 ### devstats
+Maintains and updates https://k8s.devstats.cncf.io, including taking requests for new charts.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes/community/master/sig-contributor-experience/devstats/OWNERS
 - **Contact:**
   - Slack: [#devstats](https://kubernetes.slack.com/messages/devstats)
 ### events
+Creates and runs contributor-focused events, such as the Contributor Summit.  Event Teams are part of this subproject.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes/community/master/events/OWNERS
 - **Contact:**
@@ -78,17 +83,25 @@ The following [subprojects][subproject-definition] are owned by sig-contributor-
 - **Meetings:**
   - Events Planning Subproject: [Mondays at 10:00 PT (Pacific Time)](https://docs.google.com/document/d/1oLXv5_rM4f645jlXym_Vd7AUq7x6DV-O87E6tcW1sjU/edit) (weekly). [Convert to your timezone](http://www.thetimezoneconverter.com/?t=10:00&tz=PT%20%28Pacific%20Time%29).
 ### github-management
+Manages and controls Github permissions, repos, and groups, including Org Membership.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes/community/master/github-management/OWNERS
   - https://raw.githubusercontent.com/kubernetes/org/master/OWNERS
 ### k8s.io
+Creates and maintains shortcuts and automation apps running in the k8s.io domain.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes/k8s.io/master/OWNERS
 ### mentoring
+Oversees and develops programs for helping contributors ascend the contributor ladder, including the New Contributor Workshops, Meet Our Contributors, and other programs.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes-sigs/contributor-playground/master/OWNERS
   - https://raw.githubusercontent.com/kubernetes/community/master/mentoring/OWNERS
+### repo-infra
+Creates and maintains tools and templates for kubernetes-namespace repositories.
+- **Owners:**
+  - https://raw.githubusercontent.com/kubernetes/repo-infra/master/OWNERS
 ### slack-infra
+Creates and maintains tools and automation for Kubernetes Slack.
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes-sigs/slack-infra/master/OWNERS
 - **Contact:**
diff --git a/sigs.yaml b/sigs.yaml
index 46d3c49b..4138cfdd 100644
--- a/sigs.yaml
+++ b/sigs.yaml
@@ -1056,9 +1056,13 @@ sigs:
       description: Test Failures and Triage
   subprojects:
   - name: community
+    description: Owns and manages overall community repo, including community group
+      documentation and operations.
     owners:
     - https://raw.githubusercontent.com/kubernetes/community/master/OWNERS
   - name: community-management
+    description: Manages operations and policy for upstream community group communication
+      platforms.
     owners:
     - https://raw.githubusercontent.com/kubernetes/community/master/communication/OWNERS
     meetings:
@@ -1069,6 +1073,8 @@ sigs:
       frequency: biweekly
       url: https://docs.google.com/document/d/1qf-02B7EOrItQgwXFxgqZ5qjW0mtfu5qkYIF1Hl4ZLI/edit
   - name: contributors-documentation
+    description: writes and maintains documentation around contributing to Kubernetes,
+      including the Contributor's Guide, Developer's Guide, and contributor website.
     owners:
     - https://raw.githubusercontent.com/kubernetes-sigs/contributor-site/master/OWNERS
     - https://raw.githubusercontent.com/kubernetes/community/master/contributors/guide/OWNERS
@@ -1080,11 +1086,15 @@ sigs:
       frequency: biweekly
       url: https://docs.google.com/document/d/1gdFWfkrapQclZ4-z4Lx2JwqKsJjXXUOVoLhBzZiZgSk/edit
   - name: devstats
+    description: Maintains and updates https://k8s.devstats.cncf.io, including taking
+      requests for new charts.
     contact:
       slack: devstats
     owners:
     - https://raw.githubusercontent.com/kubernetes/community/master/sig-contributor-experience/devstats/OWNERS
   - name: events
+    description: Creates and runs contributor-focused events, such as the Contributor
+      Summit.  Event Teams are part of this subproject.
     contact:
       slack: events
     owners:
@@ -1097,17 +1107,30 @@ sigs:
       frequency: weekly
       url: https://docs.google.com/document/d/1oLXv5_rM4f645jlXym_Vd7AUq7x6DV-O87E6tcW1sjU/edit
   - name: github-management
+    description: Manages and controls Github permissions, repos, and groups, including
+      Org Membership.
     owners:
     - https://raw.githubusercontent.com/kubernetes/community/master/github-management/OWNERS
     - https://raw.githubusercontent.com/kubernetes/org/master/OWNERS
   - name: k8s.io
+    description: Creates and maintains shortcuts and automation apps running in the
+      k8s.io domain.
     owners:
     - https://raw.githubusercontent.com/kubernetes/k8s.io/master/OWNERS
   - name: mentoring
+    description: Oversees and develops programs for helping contributors ascend the
+      contributor ladder, including the New Contributor Workshops, Meet Our Contributors,
+      and other programs.
     owners:
     - https://raw.githubusercontent.com/kubernetes-sigs/contributor-playground/master/OWNERS
     - https://raw.githubusercontent.com/kubernetes/community/master/mentoring/OWNERS
+  - name: repo-infra
+    description: Creates and maintains tools and templates for kubernetes-namespace
+      repositories.
+    owners:
+    - https://raw.githubusercontent.com/kubernetes/repo-infra/master/OWNERS
   - name: slack-infra
+    description: Creates and maintains tools and automation for Kubernetes Slack.
     contact:
       slack: slack-infra
     owners: