Add methods to Host operations to fake hypervisor

This patch implements some features present in os-hosts extension that are not
implemented in fake hypervisor:
    - Power Actions: Shutdown/Reboot/Startup a host
    - Change host status: enable or disable
    - Set/Unset the host into maintenance mode
With this patch we're able to get full api samples for this extension

Change-Id: I3b76e3070e326b39a67b9d4d25b5e3d91a3c102f

1 files changed, 7 insertions, 3 deletions

diff --git a/nova/virt/fake.py b/nova/virt/fake.py
index 49f7b548b..3b5a7e288 100644
--- a/nova/virt/fake.py
+++ b/nova/virt/fake.py
@@ -363,16 +363,20 @@ class FakeDriver(driver.ComputeDriver):
 
     def host_power_action(self, host, action):
         """Reboots, shuts down or powers up the host."""
-        pass
+        return action
 
     def host_maintenance_mode(self, host, mode):
         """Start/Stop host maintenance window. On start, it triggers
         guest VMs evacuation."""
-        pass
+        if not mode:
+            return 'off_maintenance'
+        return 'on_maintenance'
 
     def set_host_enabled(self, host, enabled):
         """Sets the specified host's ability to accept new instances."""
-        pass
+        if enabled:
+            return 'enabled'
+        return 'disabled'
 
     def get_disk_available_least(self):
         """ """