Update the example yaml file

Update to v2, sync with what is in master branch, fix yaml linter
warnings, reference "rawhide" branch in components.

Master branch is probably going to be read-only in modules/ namespace,
and we rely on this example module yaml in Copr build system testsuite.
So I'm trying to fix it so the module builds again, newly in rawhide
branch.

testmodule.yaml

@@ -1,38 +1,39 @@
+---
 document: modulemd
-version: 1
+version: 2
 data:
     summary: A test module in all its beautiful beauty
     description: >-
         This module demonstrates how to write simple modulemd files And
         can be used for testing the build and release pipeline.
     license:
-        module: [ MIT ]
+        module: [MIT]
     dependencies:
-        buildrequires:
-            platform: f29
-        requires:
-            platform: f29
+        - buildrequires:
+              platform: [f33]
+          requires:
+              platform: [f33]
     references:
         community: https://docs.pagure.org/modularity/
         documentation: https://fedoraproject.org/wiki/Fedora_Packaging_Guidelines_for_Modules
+        tracker: https://pagure.io/modularity/issues
     profiles:
         default:
             rpms:
-            - tangerine
+                - tangerine
     api:
         rpms:
-        - perl-Tangerine
-        - tangerine
+            - perl-Tangerine
+            - tangerine
     components:
         rpms:
             perl-List-Compare:
                 rationale: A dependency of tangerine.
-                ref: master
+                ref: rawhide
             perl-Tangerine:
                 rationale: Provides API for this module and is a dependency of tangerine.
                 ref: 7e96446
             tangerine:
                 rationale: Provides API for this module.
                 buildorder: 10
-                ref: master
-
+                ref: rawhide