Try and shorten travis execution: batch two sbt runs

Author: ochafik

.travis.yml

@@ -9,14 +9,14 @@ cache:
   - $HOME/.ivy2
   - $HOME/.sbt
 
-script:
-- sbt ++$TRAVIS_SCALA_VERSION 'set javaOptions += "-Djunit.parallel.threads=2"' 'set
-  parallelExecution in Test := false' test
-
 env:
   global:
   - secure: EiIU/od4+xs+UYNI+an212eR9P4aks1wp6fd3f1xRW5D/KCTDHcXRnpHsiiZM3+A9klVqTODdV1RDThUo8wcSro4IGjbTY3TniRjzYJnLOyuZFIGJWwN++lnepn/DwFk3Ckr661BcdIS0+5TybOD4ZzkcUOreU/0q/1qd4uqTRU=
   - secure: DNSLyto/JVJTLMsBxrxK0C0B1/bdHZrDmKxr2ZTgEE6HFTZOLnAB39MD3RS6rnPotZcffdwraBTjYwH21Z8G0byquDyYR0khKdACsW77vy9ZBkNa6YUwlrUov9t2TfdU83QFvjoe8TCBmNqiQqkgB62YO7XS1wIe+pXeFbAqe/U=
 
-after_success:
-  - "[[ $TRAVIS_BRANCH == \"master\" ]] && { sbt ++$TRAVIS_SCALA_VERSION publish; };"
+script:
+- export SBT_COMMANDS=test
+- [[ $TRAVIS_BRANCH == \"master\" ]] && export SBT_COMMANDS="$SBT_COMMANDS publish"
+- echo "SBT_COMMANDS = $SBT_COMMANDS"
+- sbt ++$TRAVIS_SCALA_VERSION 'set javaOptions += "-Djunit.parallel.threads=2"' 'set
+  parallelExecution in Test := false' $SBT_COMMANDS