Try to resolve travis issue part 2

.travis.yml

@@ -8,25 +8,20 @@ dist: trusty
 
 addons:
   chrome: stable
+before_script:
+  - "sudo chown root /opt/google/chrome/chrome-sandbox"
+  - "sudo chmod 4755 /opt/google/chrome/chrome-sandbox"
 
 cache:
   yarn: true
 
 env:
-  global:
-    # See https://git.io/vdao3 for details.
-    - JOBS=1
-  matrix:
-    # we recommend new addons test the current and previous LTS
-    # as well as latest stable release (bonus points to beta/canary)
-    - EMBER_TRY_SCENARIO=ember-2.10
-    - EMBER_TRY_SCENARIO=ember-lts-2.12
-    - EMBER_TRY_SCENARIO=ember-lts-2.16
-    - EMBER_TRY_SCENARIO=ember-release
-    - EMBER_TRY_SCENARIO=ember-beta
-    - EMBER_TRY_SCENARIO=ember-canary
-    - EMBER_TRY_SCENARIO=ember-default
-    - EMBER_TRY_SCENARIO=node-tests
+  - EMBER_TRY_SCENARIO=ember-lts-2.12
+  - EMBER_TRY_SCENARIO=ember-lts-2.8
+  - EMBER_TRY_SCENARIO=ember-release
+  - EMBER_TRY_SCENARIO=ember-beta
+  - EMBER_TRY_SCENARIO=ember-canary
+  - EMBER_TRY_SCENARIO=ember-default
 
 matrix:
   fast_finish: true