Create new example templates for TOSCA Credential Data Type

Change-Id: I360ceb7e318d3d96bd993f69d3bb2c457ebdd54c
Partially-Implements: blueprint tosca-datatype-credential

toscaparser/tests/data/test_credential_datatype.yaml

@@ -0,0 +1,77 @@
+tosca_definitions_version: tosca_simple_yaml_1_0
+
+description: >
+  TOSCA simple profile with to demonstrate the usage of the
+  TOSCA Credential Data Type.
+
+imports:
+  - custom_types/wordpress.yaml
+
+relationship_types:
+  my.types.WordpressDbConnection:
+    derived_from: tosca.relationships.ConnectsTo
+    properties:
+      credential:
+        user: db_user
+        token: db_pwd
+
+topology_template:
+  node_templates:
+    wordpress:
+      type: tosca.nodes.WebApplication.WordPress
+      requirements:
+        - host: webserver
+        - database_endpoint:
+            node: mysql_database
+            relationship: my.types.WordpressDbConnection
+
+    mysql_database:
+      type: tosca.nodes.Database
+      properties:
+        name: db_name
+        user: db_user
+        password: db_pwd
+      capabilities:
+        database_endpoint:
+          properties:
+            port: 3306
+      requirements:
+        - host:
+            node: mysql_dbms
+
+    mysql_dbms:
+      type: tosca.nodes.DBMS
+      properties:
+        root_password: db_root_pwd
+        port: 3306
+      requirements:
+        - host: server
+
+    webserver:
+      type: tosca.nodes.WebServer
+      properties:
+        admin_credential:
+          user: username
+          token: some_pass
+      requirements:
+        - host: server
+
+    server:
+      type: tosca.nodes.Compute
+      capabilities:
+        host:
+          properties:
+            disk_size: 10 GB
+            num_cpus: 1
+            mem_size: 4096 MB
+        os:
+          properties:
+            architecture: x86_64
+            type: Linux
+            distribution: Ubuntu
+            version: 14.04
+
+  outputs:
+    website_url:
+      description: URL for Wordpress wiki.
+      value: { get_attribute: [server, private_address] }

toscaparser/tests/test_toscatplvalidation.py

@@ -1379,3 +1379,9 @@ heat-translator/master/translator/tests/data/custom_types/wordpress.yaml
             exception.MissingRequiredFieldError,
             lambda: Policy(name, policies[name], None, None))
         self.assertEqual(expectedmessage, err.__str__())
+
+    def test_credential_datatype(self):
+        tosca_tpl = os.path.join(
+            os.path.dirname(os.path.abspath(__file__)),
+            "data/test_credential_datatype.yaml")
+        self.assertIsNotNone(ToscaTemplate(tosca_tpl))