fix: fix namespace spell err and can't get SC data in AddVolumeTemplate

Created by: moweiwei

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line: /kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #1464 (closed)

Special notes for reviewers:

Additional documentation, usage docs, etc.: