Promenade chart
The issue is that for joined nodes we will see hyperkube version
from Promenade chart which is not updated or different.
So, need to substitute hyperkube image directly in override to
align all hyperkube version in the cluster.
Tiller chart
Override image for tiller was defined under armada, so, need
to use appropriate place for source in substitution.
Removed placeholder to eliminate duplicates.
Change-Id: I01b8be41591f85fa962c0524bff75f0fdc97100d
8e1640ff42