Allow packages to be updatable

In order for package updates to occur, package resources need to use
the upgrade action.  This is first phase of blueprint, to get some
consistency, next phase is to allow some update control.

Change-Id: I91d6a47c3b5787df65f78e3e86941de1fb28583d
Implements: blueprint allow-package-updates

recipes/libvirt.rb

@@ -25,7 +25,8 @@ platform_options = node['openstack']['compute']['platform']
 
 platform_options['libvirt_packages'].each do |pkg|
   package pkg do
-    action :install
+    options platform_options['package_overrides']
+    action :upgrade
   end
 end
 
@@ -95,7 +96,8 @@ when 'suse'
   when 'kvm'
     node['openstack']['compute']['platform']['kvm_packages'].each do |pkg|
       package pkg do
-        action :install
+        options platform_options['package_overrides']
+        action :upgrade
       end
     end
     execute 'loading kvm modules' do
@@ -107,7 +109,8 @@ when 'suse'
   when 'xen'
     node['openstack']['compute']['platform']['xen_packages'].each do |pkg|
       package pkg do
-        action :install
+        options platform_options['package_overrides']
+        action :upgrade
       end
     end
     update_boot_kernel_and_trigger_reboot('xen')
@@ -115,14 +118,16 @@ when 'suse'
   when 'qemu'
     node['openstack']['compute']['platform']['kvm_packages'].each do |pkg|
       package pkg do
-        action :install
+        options platform_options['package_overrides']
+        action :upgrade
       end
     end
 
   when 'lxc'
     node['openstack']['compute']['platform']['lxc_packages'].each do |pkg|
       package pkg do
-        action :install
+        options platform_options['package_overrides']
+        action :upgrade
       end
     end
     service 'boot.cgroup' do