Update collection version to 4.5.0-rc1 (#266)

Signed-off-by: Webster Mudge <wmudge@cloudera.com>

Author: wmudge

galaxy.yml

@@ -16,7 +16,7 @@
 
 namespace:  cloudera
 name:       cluster
-version:    4.4.0
+version:    4.5.0-rc1
 readme:     README.md
 authors:
 - Webster Mudge @wmudge