fixed unit test for PubSubWebSocketOperator
Merge pull request #668 from davidyan-malhar/memcache_migration_pull

fixed unit test for PubSubWebSocketOperator
added alloc and remaining memory
removed remaining licensed mem from instance overview
created partial for mem used bar
SPOI-1715 #resolve
Merge pull request #669 from andyperlitch/alloc_app.SPOI-1715

Added memory used bar to header