feat(sig): Submit proposal for a CF SIG (spinnaker#137)

sig-cf/README.md

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+# SIG: CF
+
+This SIG focuses on the current Cloud Foundry (CF) clouddriver provider for Spinnaker.
+
+## Meetings
+
+* Regular SIG Meeting
+  * Last Thursday of each month, at 10 AM US/Pacific ([See in your time zone](https://www.thetimezoneconverter.com/?t=10am&tz=San%20Francisco))
+
+  [Agenda](https://docs.google.com/document/d/1TouFx5ykNCcZxNSD2JhUiRliZDXwxZ6sx239rigYdxw/edit?usp=sharing)
+
+## Leadership
+
+* Zach Smith - Armory (https://github.com/zachsmith1)
+* Ryan Pei - Armory (https://github.com/ryanpei)
+
+## Contact
+
+* [Slack](https://spinnakerteam.slack.com/archives/C012PGYN771)
+
+## Scope
+
+*Status and Alignment*
+  * Review issues and PRs in [CF Clouddriver](https://github.com/spinnaker/clouddriver/tree/master/clouddriver-cloudfoundry) and other Spinnaker services which affect deployments to Cloud Foundry
+
+  * Review any topics related to upkeep of CF Clouddriver functionality
+    * New releases and added features for CF
+    * Overall Clouddriver changes which affect the CF provider