feat: disable inline volume by default in kubectl install

[andyzhangx]

What type of PR is this? /kind feature

What this PR does / why we need it: feat: disable inline volume by default in kubectl install

Which issue(s) this PR fixes:

Fixes #364

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

feat: disable inline volume by default in kubectl install

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx

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• ~~OWNERS~~ [andyzhangx]

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[coveralls]

Pull Request Test Coverage Report for Build 2852124897

• 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 77.411%

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Totals
Change from base Build 2803651231:	0.0%
Covered Lines:	610
Relevant Lines:	788

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💛 - Coveralls

[dobsonj]

/lgtm thanks!