[Spectrum Virtualize Family] Fixed create_consistency_group
failures if the volume has mirror copy and mdisk_grp_name=many.
Fixed issues in create_flashcopy_to_consistgrp, made use
of iogrp, qos from opts for create_vdisk, mkfcmap:target
if the data exists.
closes bug: #1890589
closes bug: #1837524
Change-Id: Ica730eb7b38159e3fbf51bd7ed588c0e13a0eb46
