Now using the is_virtual facter fact to decide on libvirt type

This was a config value, but using facter the appropiate value can be
set on the nova compute host
https://bugzilla.redhat.com/show_bug.cgi?id=888756

README

@@ -19,7 +19,6 @@ $ ./bin/packstack --gen-answer-file=ans.txt
 o set CONFIG_SSH_KEY to a public ssh key to be installed to remote machines
 o Edit 127.0.0.1 to anywhere you want to install a piece of openstack on another server
 o Edit the 3 network interfaces to whatever makes sense in your setup
-o If your testing on a vm then set CONFIG_LIBVIRT_TYPE=qemu
 
 $ ./bin/packstack --answer-file=ans.txt
 
@@ -34,8 +33,6 @@ $ swift list  # if you have installed swift
 
 
 Config options
-CONFIG_LIBVIRT_TYPE :
-        set to kvm if on baremetal or qemu if testing on a vm
 CONFIG_NOVA_COMPUTE_HOSTS :
         a comma seperated list of ip addresses on which to install nova compute
 CONFIG_SWIFT_STORAGE_HOSTS :

packstack/plugins/nova_300.py

@@ -80,18 +80,6 @@ def initConfig(controllerObject):
                    "USE_DEFAULT"     : False,
                    "NEED_CONFIRM"    : False,
                    "CONDITION"       : False },
-                  {"CMD_OPTION"      : "libvirt-type",
-                   "USAGE"           : "The libvirt type to use, if your compute server is bare metal set to kvm, if testing on a vm set to qemu",
-                   "PROMPT"          : "The libvirt type to use, if your compute server is bare metal set to kvm, if testing on a vm set to qemu",
-                   "OPTION_LIST"     : ["qemu", "kvm"],
-                   "VALIDATION_FUNC" : validate.validateOptions,
-                   "DEFAULT_VALUE"   : __get_libvirt_type_default(),
-                   "MASK_INPUT"      : False,
-                   "LOOSE_VALIDATION": False,
-                   "CONF_NAME"       : "CONFIG_LIBVIRT_TYPE",
-                   "USE_DEFAULT"     : False,
-                   "NEED_CONFIRM"    : False,
-                   "CONDITION"       : False },
                   {"CMD_OPTION"      : "novacompute-privif",
                    "USAGE"           : "Private interface for Flat DHCP on the Nova compute servers",
                    "PROMPT"          : "Private interface for Flat DHCP on the Nova compute servers",
@@ -235,11 +223,6 @@ def createcomputemanifest():
             nova_config_options.addOption("flat_interface", controller.CONF['CONFIG_NOVA_COMPUTE_PRIVIF'])
             validate.r_validateIF(server, controller.CONF['CONFIG_NOVA_COMPUTE_PRIVIF'])
 
-        # if on a vm we need to set libvirt_cpu_mode to "none"
-        # see https://bugzilla.redhat.com/show_bug.cgi?id=858311
-        if controller.CONF["CONFIG_LIBVIRT_TYPE"] == "qemu":
-            nova_config_options.addOption("libvirt_cpu_mode", "none")
-
         server.execute()
         appendManifestFile(manifestfile, manifestdata + "\n" + nova_config_options.getManifestEntry())
 
@@ -271,6 +254,3 @@ def createcommonmanifest():
             data = getManifestTemplate("nova_common.pp")
             appendManifestFile(os.path.split(manifestfile)[1], data)
 
-def __get_libvirt_type_default():
-    with open('/proc/cpuinfo','r') as f:
-        return ('kvm', 'qemu')['hypervisor' in f.read()]

packstack/puppet/templates/nova_compute.pp

@@ -1,4 +1,14 @@
 
+
+if $::is_virtual == "true" {
+    $libvirt_type = "qemu"
+    nova_config{
+        "libvirt_cpu_mode": value => "none";
+    }
+}else{
+    $libvirt_type = "kvm"
+}
+
 nova_config{
     "network_host": value => "%(CONFIG_NOVA_NETWORK_HOST)s";
     "libvirt_inject_partition": value => "-1";
@@ -11,11 +21,11 @@ class {"nova::compute":
 }
 
 class { 'nova::compute::libvirt':
-  libvirt_type                => "%(CONFIG_LIBVIRT_TYPE)s",
+  libvirt_type                => "$libvirt_type",
   vncserver_listen            => "%(CONFIG_NOVA_COMPUTE_HOST)s",
 }
 
-if "%(CONFIG_LIBVIRT_TYPE)s" == "qemu" and $::operatingsystem == "RedHat" {
+if $::is_virtual == "true" and $::operatingsystem == "RedHat" {
     file { "/usr/bin/qemu-system-x86_64":
         ensure => link,
         target => "/usr/libexec/qemu-kvm",