cinder volume driver of kubernetes requires hostname to be
same as instance name so that volume can be attached to
node running the pod, hostname-override is not required
by cinder volume driver.
hostname-override was introduced with following patch:
I55df72c8f36d81852bde36018c17670101860f79
In this patch following are fixed:
1) v3 --> v2(incorrect keystone version) is changed to v3 --> v2.0
2) --hostname-override is not added to KUBELET_ARGS for cinder
volume driver.
Change-Id: I1347b934d99ad6fe04e124e295c4961fe77c6b20
Closes-Bug: #1625479
Closes-Bug: #1620455
a7d719d08a