Allow setting the guestId on create, both for in yaml and cli option

Without setting a guestId, vmware can refuse to actually boot the VM.

Author: jonrober

ezmomi/ezmomi.py

@@ -197,6 +197,7 @@ def create(self):
         vmconf.memoryHotAddEnabled = True
         vmconf.files = vmx_file
         vmconf.deviceChange = devices
+        vmconf.guestId = self.config['guestid']
 
         tasks = [destfolder.CreateVM_Task(config=vmconf, pool=resource_pool)]
         result = self.WaitForTasks(tasks)

ezmomi/params.py

@@ -244,6 +244,11 @@ def add_params(subparsers):
         type=str,
         help='Domain, e.g. "example.com"'
     )
+    create_parser.add_argument(
+        '--guestid',
+        type=str,
+        help='Guest ID, e.g. "rhel6_64Guest"'
+    )
     create_parser.add_argument(
         '--resource-pool',
         type=str,