CLOUDSTACK-8599. CS reports failure for a successful migration.

[likitha]

While cancelling a vCenter task, check if the task is cancellable and wait for the task to complete.

[asfbot]

cloudstack-pull-requests #677 SUCCESS
This pull request looks good

[remibergsma]

Who wants to step in and finish this work? It seems the original author is not able to finish it. If no one steps in, we'll have to close the PR without merging it so please help :-).

[yadvr]

tag:vmware-pickup

[bvbharatk]

ACS CI BVT Run

Sumarry:
Build Number 139
Hypervisor xenserver
NetworkType Advanced
Passed=73
Failed=0
Skipped=3

Link to logs Folder (search by build_no):https://www.dropbox.com/sh/yj3wnzbceo9uef2/AAB6u-Iap-xztdm6jHX9SjPja?dl=0

Failed tests:

Skipped tests:
test_vm_nic_adapter_vmxnet3
test_static_role_account_acls
test_deploy_vgpu_enabled_vm

Passed test suits:
test_deploy_vm_with_userdata.py
test_affinity_groups_projects.py
test_portable_publicip.py
test_vpc_vpn.py
test_over_provisioning.py
test_global_settings.py
test_scale_vm.py
test_service_offerings.py
test_routers_iptables_default_policy.py
test_routers.py
test_reset_vm_on_reboot.py
test_snapshots.py
test_deploy_vms_with_varied_deploymentplanners.py
test_login.py
test_list_ids_parameter.py
test_public_ip_range.py
test_multipleips_per_nic.py
test_regions.py
test_affinity_groups.py
test_network_acl.py
test_pvlan.py
test_volumes.py
test_nic.py
test_deploy_vm_root_resize.py
test_resource_detail.py
test_secondary_storage.py
test_vm_life_cycle.py
test_disk_offerings.py

[sureshanaparti]

Continuing with the code changes here in a new PR #2092.