Remove CSI-PowerMax configmap

[meggm]

As part of the minimal manifests feature, an additional configmap was added to the csi-powermax deloyment that contains the array ID, unisphere endpoint, transport protocol, and portgroup so that we could remove these values from the sample file. We need to undo this change, as the ask in the minimal manifests feature was to only remove all optional values from the sample file, not to remove mandatory fields as well.

This has caused confusion in the field and makes the installation process for powermax harder, not easier. We need to revert these changes by doing the following:

1. Remove the new configmap and all dependency on the new configmap
2. Put array ID, portgroup, and transport protocol fields in the minimal sample
3. Remove the driver’s dependency on the unisphere endpoint – the driver should not have to know anything about the unisphere endpoint. This will probably involve changing some logic in the csi-powermax repo.