We need update the VM phase progress metrics to report their status at the start and end of the migration and also the progress, with granular timestamps, so we will not miss these transitions.

Affected metrics:

• kubevirt_vmi_migration_phase_transition_time_from_creation_seconds
• kubevirt_vmi_phase_transition_time_from_creation_seconds
• kubevirt_vmi_phase_transition_time_from_deletion_seconds
• kubevirt_vmi_phase_transition_time_seconds