history: Added and updated os types enums and updated db

Removed os_type enums with key 6.
Updated operating_system values in vm_configuration table
to 1001, where it was equal to 6
Updated os_type enums.

Change-Id: I1fbe3dcaea2b2945c1a732b284593d75e36f9502
Signed-off-by: Shirly Radco <sradco@redhat.com>