CLOUDSTACK-9834: prepareTemplate API call doesn't work well with XenServer & Local SR (Db_exn.Uniqueness_constraint_violation)

[karuturi]

removed the host uuid from SR label so that any host which has access to
the SR(all the hosts in the same pool) can reuse the same SR

[ramkatru]

Code LGTM.

[koushik-das]

Code changes LGTM

[cloudmonger]

ACS CI BVT Run

Sumarry:
Build Number 702
Hypervisor xenserver
NetworkType Advanced
Passed=110
Failed=2
Skipped=12

Link to logs Folder (search by build_no): https://www.dropbox.com/sh/r2si930m8xxzavs/AAAzNrnoF1fC3auFrvsKo_8-a?dl=0

Failed tests:

• test_routers_network_ops.py

• test_01_isolate_network_FW_PF_default_routes_egress_true Failed

• test_02_RVR_Network_FW_PF_SSH_default_routes_egress_false Failed

Skipped tests:
test_vm_nic_adapter_vmxnet3
test_01_verify_libvirt
test_02_verify_libvirt_after_restart
test_03_verify_libvirt_attach_disk
test_04_verify_guest_lspci
test_05_change_vm_ostype_restart
test_06_verify_guest_lspci_again
test_static_role_account_acls
test_11_ss_nfs_version_on_ssvm
test_nested_virtualization_vmware
test_3d_gpu_support
test_deploy_vgpu_enabled_vm

Passed test suits:
test_deploy_vm_with_userdata.py
test_affinity_groups_projects.py
test_portable_publicip.py
test_vm_snapshots.py
test_over_provisioning.py
test_global_settings.py
test_scale_vm.py
test_service_offerings.py
test_routers_iptables_default_policy.py
test_loadbalance.py
test_routers.py
test_reset_vm_on_reboot.py
test_deploy_vms_with_varied_deploymentplanners.py
test_network.py
test_router_dns.py
test_non_contigiousvlan.py
test_login.py
test_deploy_vm_iso.py
test_list_ids_parameter.py
test_public_ip_range.py
test_multipleips_per_nic.py
test_metrics_api.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

[karuturi]

failing tests are not related to this PR.

[yadvr]

@abhinandanprateek can you review this? /cc @DaanHoogland