Apply ironic virt_type only for ironic_compute group

With current inventory state, ironic_compute group is not the same as
ironic-compute_hosts, since latter does also include hosts, on which
ironic_compute LXC container resides in LXC scenario.

For example in AIO LXC, 'ironic-compute_hosts' includes aio1, while
ironic_compute - aio1_ironic_compute_container-5fd060b3.

This results in setting `nova_virt_type` for proper nova-compute, that
resides on AIO breaking it.

Change-Id: I47b2e9af86b5dceafe68c7e56e149a8b34c30439

inventory/group_vars/ironic-compute_hosts.yml

@@ -1,16 +0,0 @@
----
-# Copyright 2017, Rackspace US, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-nova_virt_type: ironic

inventory/group_vars/ironic_compute.yml

@@ -1 +0,0 @@
-ironic-compute_hosts.yml

inventory/group_vars/ironic_compute.yml

@@ -0,0 +1,16 @@
+---
+# Copyright 2017, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+nova_virt_type: ironic