Allows to configure the probes via values.yaml in both
the armada charts, which includes armada and tiller
containers, and in the standalone tiller chart
Also bumps the osh sha in tools/helm_tk.sh to latest
22ef25ab295d6b7c6797cfffaa77cf181c673e9b
Change-Id: I0bb0acf00ecc0b61f8d324fe9b6a8507c361e9fc