Allowing resource management of metrics-server container. Will allow...

Allowing resource management of metrics-server container.  Will allow fine-tuning of resource allocation and solving throttling issues. Setting defaults as per the current request & limit allocation: cpu: 43m, memory 55Mi for both limits & requests. (#6652)

Signed-off-by: Brendan Holmes <holmesb@users.noreply.github.com>

Co-authored-by: Brendan Holmes <holmesb@users.noreply.github.com>