BUILD-2798 Move after_failure expressions to condition

.travis.yml

@@ -37,6 +37,8 @@ notifications:
     secure: PCekbN71ZmuOt82JUFmlhzxlx3wrXucSIpvxxWdZn9lfsPYQAtXCoOESaHjIVIpggsC5HSAic3HiedsWbuDk/XojmPrDCrfjgYG2wiuSuQlAa60WvzTPqXdRmUXyMQgItaAQbRfZP7kN9No/v8TZDfg5kT3i9ewy0bsfExpjAuo=
   on_start: always
 
+# This is a temporary change as Travis is currently executing this body even
+# when the job run successfully (support ticket #44617).
+# The changes should be reverted once we have a proper solution.
 after_failure:
-  - source ./.travis/setup_environment.sh
-  - notify_burgr "build" "build" "$TRAVIS_JOB_WEB_URL" "$(cat /tmp/build_start_time)" "$(date --utc +%FT%TZ)" "failed" || true
+  - '[[ $TRAVIS_TEST_RESULT = 1 ]] && source ./.travis/setup_environment.sh && notify_burgr "build" "build" "$TRAVIS_JOB_WEB_URL" "$(cat /tmp/build_start_time)" "$(date --utc +%FT%TZ)" "failed" || true'