add more LTS versions to ember-try config

Author: NullVoxPopuli

.travis.yml

@@ -26,7 +26,7 @@ branches:
     - /^v\d+\.\d+\.\d+/
 
 jobs:
-  fail_fast: true
+  fast_finish: true
   allow_failures:
     - env: EMBER_TRY_SCENARIO=ember-canary
 
@@ -45,6 +45,10 @@ jobs:
     - stage: "Additional Tests"
       env: EMBER_TRY_SCENARIO=ember-lts-2.18
     - env: EMBER_TRY_SCENARIO=ember-lts-3.4
+    - env: EMBER_TRY_SCENARIO=ember-lts-3.8
+    - env: EMBER_TRY_SCENARIO=ember-lts-3.12
+    - env: EMBER_TRY_SCENARIO=ember-lts-3.16
+    - env: EMBER_TRY_SCENARIO=ember-lts-3.20
     - env: EMBER_TRY_SCENARIO=ember-release
     - env: EMBER_TRY_SCENARIO=ember-beta
     - env: EMBER_TRY_SCENARIO=ember-canary

config/ember-try.js

@@ -30,6 +30,38 @@ module.exports = function() {
             }
           }
         },
+        {
+          name: 'ember-lts-3.8',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.8.0'
+            }
+          }
+        },
+        {
+          name: 'ember-lts-3.12',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.12.0'
+            }
+          }
+        },
+        {
+          name: 'ember-lts-3.16',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.16.0'
+            }
+          }
+        },
+        {
+          name: 'ember-lts-3.20',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.20.0'
+            }
+          }
+        },
         {
           name: 'ember-release',
           npm: {