Update name of a File Share to same name as an existing File Share name, is success. #1305

Issue/Feature Description:
Create two file shares with names FS1 and FS2, Update name of FS2 to FS1. List File share.

./osdsctl fileshare create 1 -n "fs001"
./osdsctl fileshare create 1 -n "fs002"
./osdsctl fileshare list
./osdsctl fileshare update 2abfb5ea-15c6-4206-afd5-6cced63c6eb6 -n fs001
./osdsctl fileshare list

Why this issue to fixed / feature is needed(give scenarios or use cases):

How to reproduce, in case of a bug:

Other Notes / Environment Information: (Please give the env information, log link or any useful information for this issue)