Fix a clone volume problem in VMAX driver

If the source volume contains meta members of different sizes,
create cloned volume will fail with error "ERROR_FAMILY_NOT_SUPPORTED".
This patched fixed this problem.

Change-Id: I92e7e8b56e3a21644aa2bff3288c1bdc80d45cc6
Closes-Bug: #1391205
Merge "Fix a clone volume problem in VMAX driver"