fix: snapshot sidecar rbac permission issue

[andyzhangx]

What type of PR is this?
/kind bug

What this PR does / why we need it:
fix: snapshot sidecar rbac permission issue
rbac permission for snapshot sidecar should always be applied

Which issue(s) this PR fixes:

Fixes #623

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

fix: snapshot sidecar rbac permission issue

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx

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Needs approval from an approver in each of these files:

• OWNERS [andyzhangx]

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[coveralls]

Pull Request Test Coverage Report for Build 8266738841

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.915%

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Totals
Change from base Build 8197436606:	0.0%
Covered Lines:	887
Relevant Lines:	1124

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💛 - Coveralls