🐛 Check that replicas pointer is not nil in machinepool controller

[Fedosin]

What this PR does / why we need it:

If replicas pointer is nil, machinepool controller gets a runtime error and fails. To prevent this we check that replicas is not nil before getting its value.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

/area machinepool

[sbueringer]

Thx!

/lgtm
/approve

[sbueringer]

/cherry-pick relase-1.7

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: b6200987f26125ad889382313d0ecc5b0244a15f

[sbueringer]

/cherry-pick relase-1.6

[k8s-infra-cherrypick-robot]

@sbueringer: once the present PR merges, I will cherry-pick it on top of relase-1.7 in a new PR and assign it to you.

In response to this:

/cherry-pick relase-1.7

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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• OWNERS [sbueringer]

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[k8s-infra-cherrypick-robot]

@sbueringer: once the present PR merges, I will cherry-pick it on top of relase-1.6 in a new PR and assign it to you.

In response to this:

/cherry-pick relase-1.6

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-sigs/prow repository.

[k8s-infra-cherrypick-robot]

@sbueringer: cannot checkout relase-1.7: error checking out "relase-1.7": exit status 1 error: pathspec 'relase-1.7' did not match any file(s) known to git

In response to this:

/cherry-pick relase-1.7

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-sigs/prow repository.

[k8s-infra-cherrypick-robot]

@sbueringer: cannot checkout relase-1.6: error checking out "relase-1.6": exit status 1 error: pathspec 'relase-1.6' did not match any file(s) known to git

In response to this:

/cherry-pick relase-1.6

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-sigs/prow repository.

[sbueringer]

/cherry-pick release-1.7

[sbueringer]

/cherry-pick release-1.6

[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #10634

In response to this:

/cherry-pick release-1.7

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-sigs/prow repository.

[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #10635

In response to this:

/cherry-pick release-1.6

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-sigs/prow repository.