feat(Support): add v2beta (#8523)

* feat(Support): add v1beta

* owlbot updates

* add new classes and samples

Author: bshaffer

Support/.OwlBot.yaml

@@ -1,4 +1,5 @@
 deep-copy-regex:
-    - source: /google/cloud/support/(v2)/.*-php/(.*)
-      dest: /owl-bot-staging/Support/$1/$2
+  -
+    source: '/google/cloud/support/(v2|v2beta)/.*-php/(.*)'
+    dest: /owl-bot-staging/Support/$1/$2
 api-name: Support