Resolve "eckoperator DNS netpol does not allow port 5353 for Openshift"

Package Owner Merge Request

Package Changes

Added an openshift toggle to the values.yaml and a conditional statement in egress-dns.yaml based on that toggle. If Openshift is true, ports 53 and 5353 will be open for DNS. If it is false, only port 53 will be open for DNS.

Additional Details

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Closes #566 (closed)