Bug 961475
Bug 957164
Bug 963828
added validation for initial git url
safe yaml for parsing of downloaded yaml
Fix bug 964348
The update namespace functionality was removed.  Removing the supporting functions that only serviced that function.
Merge pull request #2499 from lnader/master

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Merge pull request #2542 from rajatchopra/master

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Merge pull request #2554 from pmorie/bugs/964348

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Merge pull request #2552 from rmillner/cleanup_namespace

Merged by openshift-bot
Fixes to cleanup during app operation failures