CLOUDSTACK-8071: Fixed api key issue in test_snapshots_improvement.py

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-8055: test_portable_ip.py - Tagging test case which can't be run on simulator

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-8081: Fixed VM snapshot test cases in test_escalation_instances.py and also dealt cleanup issues

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-8074: Fixed maint/test_multiple_ip_ranges.py

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