Ability to turn hpet on/off from driver prefs + fix for reboot_timeout

Change-Id: I7e49a346eb31f04220ca40557e172064cbbaf90b

devops/driver/libvirt/libvirt_driver.py

@@ -31,14 +31,16 @@ class DevopsDriver(object):
     def __init__(self,
                  connection_string="qemu:///system",
                  storage_pool_name="default",
-                 stp=True):
+                 stp=True, hpet=True):
         libvirt.virInitialize()
         self.conn = libvirt.open(connection_string)
         self.xml_builder = LibvirtXMLBuilder(self)
         self.stp = stp
+        self.hpet = hpet
         self.capabilities = None
         self.allocated_networks = None
         self.storage_pool_name = storage_pool_name
+        self.reboot_timeout = None
 
         if settings.VNC_PASSWORD:
             self.vnc_password = settings.VNC_PASSWORD

devops/driver/libvirt/libvirt_xml_builder.py

@@ -159,6 +159,11 @@ class LibvirtXMLBuilder(object):
         node_xml.vcpu(str(node.vcpu))
         node_xml.memory(str(node.memory * 1024), unit='KiB')
 
+        node_xml.clock(offset='utc')
+        node_xml.clock.timer(
+            name='hpet',
+            present='yes' if self.driver.hpet else 'no')
+
         with node_xml.os:
             node_xml.type(node.os_type, arch=node.architecture)
             for boot_dev in json.loads(node.boot):

devops/settings.py

@@ -19,6 +19,7 @@ DRIVER_PARAMETERS = {
     'connection_string': environ.get('CONNECTION_STRING', 'qemu:///system'),
     'storage_pool_name': environ.get('STORAGE_POOL_NAME', 'default'),
     'stp': True,
+    'hpet': False,
 }
 
 INSTALLED_APPS = ['south', 'devops']