Fixing minimal rbac install

[marccampbell]

This fixes #768

• Automated installs look for configmaps by label, so had to expand the RBAC scope to all configmaps in the namespace
• Support bundle is failing in operator because it can't list namespaces. This should not be a hard failure.
• Velero is installed, but the Snapshot Settings page cannot read it. How can we handle this?
• Preflight checks have a warning that the cluster doesn't have permissions (see below). If these are common errors, should we handle this differently?
• e2e tests must be updated to include a minimalRBAC install or else this will break every time we add a new K8s object