CLOUDSTACK-8116: Moved ldap data to configurableData section in test_data.py and made related changes in the test case

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-8117: Increase the allowed margin (+/-) for memory of VM on hyperv used to equate with the memory specified in service offering

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>