Fix ca-bundle configuration for machine controller webhook

[ahmedwaleedmalik]

Signed-off-by: Waleed Malik ahmedwaleedmalik@gmail.com

What this PR does / why we need it:
Adds missing flag, volume and volume mount for custom CA bundle is machine-controller webhook's manifests.

Which issue(s) this PR fixes:

Fixes #2585

What type of PR is this?

/kind bug

Special notes for your reviewer:

Does this PR introduce a user-facing change? Then add your Release Note here:

Fixes an issue where custom ca-bundle was not being propagated to the machine controller webhooks

Documentation:

NONE

[kron4eg]

@ahmedwaleedmalik please also add

"kubeone.k8c.io/cabundle-hash": "{{ .Config.CABundle | sha256sum }}"

to spec.template.metadata.annotations

[kron4eg]

/approve
/lgtm

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kron4eg

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[kubermatic-bot]

LGTM label has been added.

Git tree hash: 9a3705a854f3d9f34d376202aa1a3ea737a9c702

[ahmedwaleedmalik]

/cherry-pick release/v1.5

[kubermatic-bot]

@ahmedwaleedmalik: once the present PR merges, I will cherry-pick it on top of release/v1.5 in a new PR and assign it to you.

In response to this:

/cherry-pick release/v1.5

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[kubermatic-bot]

@ahmedwaleedmalik: new pull request created: #2587

In response to this:

/cherry-pick release/v1.5

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[xmudrii]

/cherrypick release/v1.5

[xmudrii]

I meant v1.4.
/cherry-pick release/v1.4

[kubermatic-bot]

@xmudrii: new pull request could not be created: failed to create pull request against kubermatic/kubeone#release/v1.5 from head kubermatic-bot:cherry-pick-2586-to-release/v1.5: status code 422 not one of [201], body: {"message":"Validation Failed","errors":[{"resource":"PullRequest","code":"custom","message":"No commits between kubermatic:release/v1.5 and kubermatic-bot:cherry-pick-2586-to-release/v1.5"}],"documentation_url":"https://docs.github.com/rest/reference/pulls#create-a-pull-request"}

In response to this:

/cherrypick release/v1.5

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[kubermatic-bot]

@xmudrii: new pull request created: #2589

In response to this:

I meant v1.4.
/cherry-pick release/v1.4

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.