[manila-csi-plugin] helm: support additional volumes in manila csi chart

[okozachenko1203]

What this PR does / why we need it:
This PR supports additional volumes in manila csi chart. Typical use case is to mount ca cert of openstack api.

Which issue this PR fixes(if applicable):
fixes #

Special notes for reviewers:

Release note:

[manila-csi-plugin] add support for additional volumes in helm chart. 
Typical use case is to mount ca cert of openstack api.

[k8s-ci-robot]

Hi @okozachenko1203. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[kayrus]

/ok-to-test

[kayrus]

@okozachenko1203 thanks for the PR, please fill in the release notes.

[okozachenko1203]

@okozachenko1203 thanks for the PR, please fill in the release notes.

done

[mnaser]

small nit which will probably prevent it from merging

[mnaser]

/lgtm

but it doesnt count for me here :)

[k8s-ci-robot]

@mnaser: changing LGTM is restricted to collaborators

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In response to this:

/lgtm

but it doesnt count for me here :)

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[mnaser]

@okozachenko1203 sadly we're conflicting again, can you please push up the fix again?

[kayrus]

/lgtm
/approve

[k8s-ci-robot]

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This pull-request has been approved by: kayrus

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