some component tests fixes

[DaanHoogland]

Description

This PR is a continuation of work in #5082. aiming to have a full set of component tests running on all hypervisors. see #6391 for an inventory of all work to be done.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

included:

• test_host_ha.py
• test_rootvolume_resize.py
• test_vpc_vm_life_cycle.py

Screenshots (if appropriate):

How Has This Been Tested?