Run CI on both v2 and v3 of zend-servicemanager

.travis.yml

@@ -16,16 +16,24 @@ matrix:
   include:
     - php: 5.5
       env:
-        - SERVICE_MANAGER_VERSION="^2.7.3"
         - EXECUTE_CS_CHECK=true
-    - php: 5.6
+    - php: 5.5
       env:
         - SERVICE_MANAGER_VERSION="^2.7.3"
+    - php: 5.6
+      env:
         - EXECUTE_TEST_COVERALLS=true
+    - php: 5.6
+      env:
+        - SERVICE_MANAGER_VERSION="^2.7.3"
+    - php: 7
     - php: 7
       env:
         - SERVICE_MANAGER_VERSION="^2.7.3"
     - php: hhvm 
+    - php: hhvm 
+      env:
+        - SERVICE_MANAGER_VERSION="^2.7.3"
   allow_failures:
     - php: hhvm
 
@@ -38,7 +46,7 @@ before_install:
   - composer self-update
   - if [[ $EXECUTE_TEST_COVERALLS == 'true' ]]; then composer require --dev --no-update satooshi/php-coveralls ; fi
   - if [[ $SERVICE_MANAGER_VERSION != '' ]]; then composer require --dev --no-update "zendframework/zend-servicemanager:$SERVICE_MANAGER_VERSION" ; fi
-  - if [[ $SERVICE_MANAGER_VERSION == '' ]]; then composer require --dev --no-update "zendframework/zend-servicemanager:^3.0" ; fi
+  - if [[ $SERVICE_MANAGER_VERSION == '' ]]; then composer require --dev --no-update "zendframework/zend-servicemanager:^3.0.3" ; fi
 
 install:
   - travis_retry composer install --no-interaction --ignore-platform-reqs