Fix the v2 image client variable name

image member service client has been separated out in
I6015511511cbf79ff73b48b2546b44e5ea50fdc2
but name os variable was not consistent with other instances.

This is follow up patch to correct those.

Change-Id: Ia357bafb3625933198a00b2ed08ab4c128a27adf
3 files changed