Ensure provisioning executed after networking (#1480)

Provisioning is executed on the out-call action, so it should be added
the call start before the configuration of the network interfaces is
scheduled via a guest capability as it is also executed out the out call
to allow the first part to be performed before the VM is booted and the
latter to be done after it is running.

Fixes: #1479

lib/vagrant-libvirt/action.rb

@@ -77,10 +77,12 @@ module VagrantPlugins
           b.use BoxCheckOutdated
           b.use Call, IsCreated do |env, b2|
             b2.use CleanupOnFailure
+            b2.use Provision
 
             # Create VM if not yet created.
             if !env[:result]
               b2.use SetNameOfDomain
+
               if !env[:machine].config.vm.box
                 b2.use CreateDomain
                 b2.use CreateNetworks
@@ -117,7 +119,7 @@ module VagrantPlugins
       # Assuming VM is created, just start it. This action is not called
       # directly by any subcommand. VM can be suspended, already running or in
       # poweroff state.
-      def self.action_start
+      private_class_method def self.action_start
         Vagrant::Action::Builder.new.tap do |b|
           b.use ConfigValidate
           b.use Call, IsRunning do |env, b2|
@@ -140,8 +142,6 @@ module VagrantPlugins
                 b3.use StartDomain
               else
                 # VM is not running or suspended.
-                b3.use Provision
-
                 b3.use PrepareNFSValidIds
                 b3.use SyncedFolderCleanup
                 b3.use SyncedFolders
@@ -352,6 +352,8 @@ module VagrantPlugins
               end
               b3.use CreateNetworks
               b3.use ResumeDomain
+              b3.use Provision
+              b3.use WaitForCommunicator, [:running]
             end
           end
         end