Description of problem: In an api deployment, the fusor server will all null values for "openshift_storage_host" and "openshift_export_path" causing failures during the OSE deployment and the storage location for docker is mounted.

E, [2016-08-24T11:27:09.649869 #19379] ERROR -- : Error running command: sudo safe-mount.sh '2' '' '' 'nfs'
E, [2016-08-24T11:27:09.650246 #19379] ERROR -- : Status code: 1
E, [2016-08-24T11:27:09.650658 #19379] ERROR -- : Command output: ["sudo: unable to send audit message: Permission denied\n", "mount.nfs: Failed to resolve server : Name or service not known\n", "Failed to mount nfs share\n"]
W, [2016-08-24T11:27:09.651621 #19379]  WARN -- : Could not mount the NFS share ':' in order to inspect it. Please check that the NFS share exists. ["sudo: unable to send audit message: Permission denied\n", "mount.nfs: Failed to resolve server : Name or service not known\n", "Failed to mount nfs share\n"]

QCI ISO Media Version: QCI-1.0-RHEL-7-20160823.t.1

How reproducible: 100%

Steps to Reproduce:
1. Install QCI
2. Create storage location for RHV/OSE (NFS was used this run)
3. Create a deployment for RHV and OSE
4. Submit empty values for OpenShift storage. Returns 200 OK
PUT /fusor/api/v21/deployments/<deployment id> -d

  {'deployment': {
      'openshfit_storage_host': '',
      'openshift_export_path': '',      
      'openshift_storage_type': 'NFS'
  }
5. Verifying deployment does not return an error for missing openshift storage values
GET /fusor/api/v21/deployments/<deployment id>/validate


Actual results: Deployment fails during OSE install. Deployment log shows "Error running command: sudo safe-mount.sh '2' '' '' 'nfs'"

Expected results: Submitting null values for openshift storage locations should return an error. Deployment validation endpoint should check for null values in  "openshift_storage_host" and "openshift_export_path".