MCAD deployment in custom namespace

[metalcycling]

What changes have been made

Installing MCAD always happens in the kube-system namespace. This update allows users to specify the namespace they want to use for the deployment.

Verification steps

Create a namespace called mcad and deployed MCAD there using the helm chart and --set namespace="mcad".

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[openshift-ci]

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[VanillaSpoon]

/lgtm