Add --include argument to old prepare command

So the old prepare command retains feature parity with the new one,
add an --include argument for the new include filtering.

Change-Id: I472202243fc9b95034e481761845755eb87dff34
Depends-On: I751670f3788898d78f261000c0f51049948e8544

releasenotes/notes/prepare-include-86d96ff1d7bdc44d.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    The command `openstack overcloud container image prepare` command now has
+    an `--include` argument which will filter entries if they do not match any
+    of the include expressions.

tripleoclient/tests/v1/test_container_image.py

@@ -127,6 +127,7 @@ class TestContainerImagePrepare(TestPluginV1):
 
         mock_cip.assert_called_with(
             excludes=[],
+            includes=[],
             mapping_args={
                 'name_suffix': '',
                 'tag': 'latest',
@@ -234,6 +235,7 @@ class TestContainerImagePrepare(TestPluginV1):
                                      object_request=mock.ANY)
         mock_cip.assert_called_once_with(
             excludes=[],
+            includes=[],
             mapping_args={
                 'namespace': '192.0.2.0:8787/t',
                 'name_suffix': 'foo',

tripleoclient/v1/container_image.py

@@ -273,6 +273,17 @@ class PrepareImageFiles(command.Command):
                    "exclude from the final output. Can be specified multiple "
                    "times."),
         )
+        parser.add_argument(
+            "--include",
+            dest="includes",
+            metavar='<regex>',
+            default=[],
+            action="append",
+            help=_("Pattern to match against resulting imagename entries to "
+                   "include in final output. Can be specified multiple "
+                   "times, entries not matching any --include will be "
+                   "excluded. --exclude is ignored if --include is used."),
+        )
         parser.add_argument(
             "--images-file",
             dest="output_images_file",
@@ -401,6 +412,7 @@ class PrepareImageFiles(command.Command):
 
         prepare_data = kolla_builder.container_images_prepare(
             excludes=parsed_args.excludes,
+            includes=parsed_args.includes,
             service_filter=service_filter,
             pull_source=parsed_args.pull_source,
             push_destination=parsed_args.push_destination,