CLOUDSTACK-4637: Fix failures in test_egress_fw_rules.py

Removed log_test_exceptions which did not add any value.
Skipped few tests which are incomplete. Added timeout logic
and to wait for router to boot.
(cherry picked from commit a65f1ebefca7b22512762faf1832291153782f58)

Signed-off-by: Sangeetha <sangeetha.hariharan@citrix.com>
test_stopped_vm.py tries to clean up ISOs that are already deleted as part of Account Deletion. Do not add account owned iso objects to the cleanup list.
(cherry picked from commit 2ecf272dac0853f791b01d730a6d1bbc5dc3a1de)

Signed-off-by: Sangeetha <sangeetha.hariharan@citrix.com>
Cloudstack:4407 - Pending changes - Use extractTemplate API to get hypervisor specific template information.
(cherry picked from commit 4747b2abfe8e44ab4b07b31e203b821d4236e5b0)

Signed-off-by: Sangeetha <sangeetha.hariharan@citrix.com>