[cern] Take kubeproxy_options into account on proxy setup

Cherry-pick: https://review.opendev.org/#/c/679017/

The label kubeproxy_options was being ignored when setting up both master and minions. Add it to the kube proxy args.

Change-Id: Ic830f19e1af062e90d066e6df4df2e4376e4f379 Story: 2006465 Task: 36394