[minor] New mirror capability based on ISC

[durera]

New Mirror Function

mas mirror

This does not immediately replace the mas mirror-images command, but will be made available alongside it as a tech preview in effect.

However, eventually it will replace the old mirror-images command.

• Improved UI with better progress reporting
• Clearer logging
• Utilizes oc-mirror with ImageSetConfiguration resources instead of oc image mirror
• Removed dependency on ibm-pak and IBM CASE metadata for image mirroring, we use https://github.com/ibm-mas/image-set-configs as the source of truth for what images need to be mirrored

Install Function Updates

Also, fixed a number of issues in install while testing these changes:

• Add NoReturn type hint for fatalError() method
• Fix numerous bool types added to self.params (which should be all strings)
• Fix generateJDBCCfg() type hint in Db2SettingsMixin
• Fix dynamicClient type hint in ManageSettingsMixin
• Fix generateMongoCfg type hint in MongoDbSettingsMixin
• Disabled OCP version check when --dev-mode is set (because we don't load the catalog metadata files containing this information)
• Added various asserts to check for None when variables are expected to be defined before they are used in scenarios where a non-None value is expected
• Fixed code that converts cos_type odf to ocs internally, because we still use the old name in the ansible code
• Added type hint for self.approvals
• Improved logging in the displayMixin

Testing

Successful airgapped install in Fyre:

[sanjayprab]

looks good!!