Description of problem:

I have 3.5 SHE EL6 host with engine 3.6.8 and I tried to deploy an EL7 3.5 host as another SHE host (into Default cluster which is in InClusterUpgrade scheduling policy). I do this is a step before migration whole 3.5 SHE env to 3.6.

In the end of hosted-engine --deploy there are errors even the whole process seems to finish OK - at least I see the host up in engine and visible in hosted-engine --vm-status.

~~~
2016-08-05 20:11:20 INFO otopi.plugins.ovirt_hosted_engine_setup.engine.add_host add_host._wait_host_ready:200 The VDSM Host is now operational
2016-08-05 20:11:20 DEBUG otopi.plugins.ovirt_hosted_engine_setup.engine.add_host add_host._closeup:691 Setting CPU for the cluster
2016-08-05 20:11:21 DEBUG otopi.plugins.ovirt_hosted_engine_setup.engine.add_host add_host._closeup:697 {'name': None, 'level': None, 'cpu_tune': None, 'architecture': 'X86_64', 'mode': None, 'cores': None, 'spee
d': None, 'id': 'Intel Westmere Family', 'topology': None}
2016-08-05 20:11:21 DEBUG otopi.plugins.ovirt_hosted_engine_setup.engine.add_host add_host._closeup:708 Cannot set CPU level of cluster Default
Traceback (most recent call last):
  File "/usr/share/ovirt-hosted-engine-setup/scripts/../plugins/ovirt-hosted-engine-setup/engine/add_host.py", line 702, in _closeup
    cluster.update()
  File "/usr/lib/python2.7/site-packages/ovirtsdk/infrastructure/brokers.py", line 358, in update
    headers={"Correlation-Id":correlation_id}
  File "/usr/lib/python2.7/site-packages/ovirtsdk/infrastructure/proxy.py", line 78, in update
    return self.request('PUT', url, body, headers)
  File "/usr/lib/python2.7/site-packages/ovirtsdk/infrastructure/proxy.py", line 118, in request
    persistent_auth=self._persistent_auth)
  File "/usr/lib/python2.7/site-packages/ovirtsdk/infrastructure/proxy.py", line 146, in __doRequest
    persistent_auth=persistent_auth
  File "/usr/lib/python2.7/site-packages/ovirtsdk/web/connection.py", line 134, in doRequest
    raise RequestError, response
RequestError: 
status: 400
reason: Bad Request
detail: inclusterupgrade is not a member of SchedulingPolicyType. Possible values for SchedulingPolicyType are: evenly_distributed, power_saving, none, vm_evenly_distributed
2016-08-05 20:11:21 ERROR otopi.plugins.ovirt_hosted_engine_setup.engine.add_host add_host._closeup:716 Cannot automatically set CPU level of cluster Default:
inclusterupgrade is not a member of SchedulingPolicyType. Possible values for SchedulingPolicyType are: evenly_distributed, power_saving, none, vm_evenly_distributed
~~~

Version-Release number of selected component (if applicable):
ovirt-hosted-engine-setup-1.2.6.1-1.el7ev.noarch

How reproducible:
right now

Steps to Reproduce:
1. SHE env - 3.5 EL6 host, engine 3.6 with InClusterUpgrade sched. policy
2. have EL7 host with 3.5 rpms (cannot go directly to 3.6 rpms)
3. hosted-engine --deploy

Actual results:
some strange error about policy and scheduling policy

Expected results:
either error should make the process fail or just warning of be silent

Additional info:
imo all checks should be done in advance before doing any practical activity ;)