Separate tasks in testing

Signed-off-by: Valentin Popov <info@valentineus.link>

.travis.yml

@@ -1,8 +1,11 @@
 language: php
 
-sudo: true
+jobs:
+  include:
+    - stage: test
+      sudo: true
 
-addons:
+      addons:
       firefox: "47.0.1"
       postgresql: "9.3"
       apt:
@@ -10,31 +13,24 @@ addons:
           - "oracle-java8-installer"
           - "oracle-java8-set-default"
 
-cache:
+      cache:
         directories:
           - "$HOME/.composer/cache"
             - "$HOME/.npm"
 
-php:
+      php:
         - 5.6
         - 7.0
         - 7.1
 
-env:
+      env:
         global:
-    - MOODLE_BRANCH=MOODLE_29_STABLE
-    - MOODLE_BRANCH=MOODLE_30_STABLE
-    - MOODLE_BRANCH=MOODLE_31_STABLE
-    - MOODLE_BRANCH=MOODLE_32_STABLE
-    - MOODLE_BRANCH=MOODLE_33_STABLE
-    - MOODLE_BRANCH=MOODLE_34_STABLE
           - MOODLE_BRANCH=MOODLE_35_STABLE
-
         matrix:
           - DB=mysqli
           - DB=pgsql
 
-before_install:
+      before_install:
         - phpenv config-rm xdebug.ini
         - nvm install 8.9
         - nvm use 8.9
@@ -42,10 +38,10 @@ before_install:
         - composer create-project -n --no-dev --prefer-dist moodlerooms/moodle-plugin-ci ci ^2
         - export PATH="$(cd ci/bin; pwd):$(cd ci/vendor/bin; pwd):$PATH"
 
-install:
+      install:
         - moodle-plugin-ci install
 
-script:
+      script:
         - moodle-plugin-ci phplint
         - moodle-plugin-ci phpcpd
         - moodle-plugin-ci phpmd
@@ -57,12 +53,9 @@ script:
         - moodle-plugin-ci phpunit
         - moodle-plugin-ci behat
 
-jobs:
-  include:
-    stage: deploy
-
+    - stage: deploy
       before_deploy:
-      - cd $TRAVIS_REPO_SLUG
+        - cd "$TRAVIS_REPO_SLUG"
         - git stash --all
         - /bin/sh build.sh