Complete and sanitize QA pipeline

- do not execute QA on dogfood/* feature branches
- run non-postgreSQL tests on release branches only
- run HA tests on release and dogfood-on-next branches only

.travis.yml

@@ -5,6 +5,10 @@ jdk: oraclejdk8
 script: ./travis.sh
 dist: trusty
 
+branches:
+  except:
+  - /^dogfood\/.*$/
+
 env:
   - TARGET=BUILD
   - TARGET=WEB_TESTS