Add flag for disabling prometheus-to-sd only for daemon sets

[Szetty]

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[Szetty]

/cc @kawych @piosz

[Szetty]

/check-cla

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/ok-to-test
/lgtm

[Szetty]

/test pull-kubernetes-e2e-kops-aws

[Szetty]

/test pull-kubernetes-e2e-kops-aws

[Szetty]

/milestone v1.12

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/milestone v1.12

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[Szetty]

/cc @roberthbailey

[MaciekPytel]

/approve

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This pull-request has been approved by: kawych, MaciekPytel, Szetty

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[roberthbailey]

Generally these parameters are also exposed in config-default.sh and config-test.sh so that people know that they can be toggled.

[Szetty]

We do not expect people to disable prometheus-to-sd for DaemonSets only. For GKE specifically our team wants to monitor DaemonSets with just one prometheus-to-sd deployed as DaemonSet, thus this is why we are adding this flag.

[roberthbailey]

/milestone v1.12

[k8s-github-robot]

Automatic merge from submit-queue (batch tested with PRs 67745, 67432, 67569, 67825, 67943). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.