Update git submodules

* Update keystone from branch 'master'
  - Merge "Refresh "how can I help?" doc"
  - Refresh "how can I help?" doc
    
    Add prose about why someone might want to contribute to keystone and
    reduce the emphasis on developer-specific contributions.
    
    Change-Id: Ied32aac47e098d25fd9880a12c617574d5e24ace
This commit is contained in:
Zuul 2019-10-31 01:25:52 +00:00 committed by Gerrit Code Review
parent b1b79db5b7
commit c2cba3c477

@ -1 +1 @@
Subproject commit 20344d952a516c711ebf426cd8120e68e99a25eb
Subproject commit 36aad6ff8191c0d891f6f0b8e87b322c851e3322