Instance Cleanup operation failed in DB upgrade.

[devendra104]

Description: Open stack delete module failed to delete the passed instance from OpenStack server.

Problem Summary: In DB upgrade, We have observed this issue multiple time, delete_openstack_instance module failed to delete the passed instance because of the timeout, We are using default timeout value i.e 180 seconds in deletion operation.

Impact: We need to perform a manual operation for cleanup every time before trigger.