add certificate authority file

[ankitcharolia]

This PR is fixing the BUG #3432
Please review it.

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[ant31]

Does it solve your issue, have you tested? why the CI clusters are not failing on this task?

you need the sign the CLA

[ant31]

ci check this

[ankitcharolia]

@ant31 This fixes issues mentioned in #3432 and playbook runs through.

This PR also fixes backing up etcd v3 data.

I have already signed CLA. Please have a look.

[ant31]

/check-cla

[ant31]

you commited with: ankitcharolia1991
You must sign the cla with the same email address than the commit

[ankitcharolia1991]

/check-cla

[ankitcharolia1991]

/check-cla

[ankitcharolia1991]

@ant31 Hey I have signed CLA. Please verify it and merge PR if all look good.

Thank you

[ant31]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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