Migrate tempest-lib code into new lib dir

This commit migrates all of the code from tempest-lib as of it's
current HEAD, 6ad0ce42c2791a28125d38b40e7dcddf32dbeed7. The only
changes made to the tempest-lib code is to update the imports and
other references to tempest_lib. Since in it's new home it should
be tempest.lib.

Partially implements bp tempest-lib-reintegration

Change-Id: Iadc1b61953a86fa9de34e285a0bb083b1ba06fa8
diff --git a/tempest/lib/services/compute/versions_client.py b/tempest/lib/services/compute/versions_client.py
new file mode 100644
index 0000000..5898f93
--- /dev/null
+++ b/tempest/lib/services/compute/versions_client.py
@@ -0,0 +1,55 @@
+# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
+#
+# 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.
+
+from oslo_serialization import jsonutils as json
+from six.moves import urllib
+
+from tempest.lib.api_schema.response.compute.v2_1 import versions as schema
+from tempest.lib.common import rest_client
+
+
+class VersionsClient(rest_client.RestClient):
+
+    def _get_base_version_url(self):
+        # NOTE: The URL which is gotten from keystone's catalog contains
+        # API version and project-id like "v2/{project-id}", but we need
+        # to access the URL which doesn't contain them for getting API
+        # versions. For that, here should use raw_request() instead of
+        # get().
+        endpoint = self.base_url
+        url = urllib.parse.urlparse(endpoint)
+        return '%s://%s/' % (url.scheme, url.netloc)
+
+    def list_versions(self):
+        version_url = self._get_base_version_url()
+        resp, body = self.raw_request(version_url, 'GET')
+        body = json.loads(body)
+        self.validate_response(schema.list_versions, resp, body)
+        return rest_client.ResponseBody(resp, body)
+
+    def get_version_by_url(self, version_url):
+        """Get the version document by url.
+
+        This gets the version document for a url, useful in testing
+        the contents of things like /v2/ or /v2.1/ in Nova. That
+        controller needs authenticated access, so we have to get
+        ourselves a token before making the request.
+
+        """
+        # we need a token for this request
+        resp, body = self.raw_request(version_url, 'GET',
+                                      {'X-Auth-Token': self.token})
+        body = json.loads(body)
+        self.validate_response(schema.get_one_version, resp, body)
+        return rest_client.ResponseBody(resp, body)