[feature] Support metal validation in Agnostic/None, Baremetal and External Platform Types

USER STORY:

• As a partner I would like to be able to use OPCT to validate OCP on metal nodes using Agnostic/None, Baremetal and External as platform types and HighlyAvailable, Compact and SingleReplica topologies, so I can certify this topology in my catalog.

From VCSP Partner Program:

"Installation - OpenShift runs on platform, without integration to the platform’s features

• See RHCOS Platform Support for details.  For baremetal hardware certification for OpenShift, refer to Red Hat OpenStack Platform and Red Hat OpenShift Container Platform bare metal hardware certification."

DESCRIPTION:

OPCT Features to evaluate running on Bare Metal (BM):

• Run OPCT with regular mode <default>
• Run OPCT with upgrade mode
• Run OPCT with disconnected mode

Variants to be tested:

• HA
• Compact

Required:

Run OPCT Validation in the OCP installation with Bare Metal as a Platform Type:

• Steps to run OPCT in BM Platform in regular mode
• Steps to run OPCT in BM Platform in upgrade mode
• Steps to run OPCT in BM Platform in disconnected mode
• Steps to run OPCT in BM Platform in disconnected-upgrade mode

Nice to have:

...

ACCEPTANCE CRITERIA:

• Document with steps to run OPCT in BM cluster, describing any limitations and risks it might have

ENGINEERING DETAILS:

• There are an effort to run BM cluters installed by Assisted Installer. More details on the Slack channel: https://redhat-internal.slack.com/archives/C04TK9MMUA1