Run integration tests first on travis CI

.travis.yml

@@ -9,9 +9,9 @@ php:
 # Separate different test suites
 env:
   matrix:
+    - TEST_SUITE=IntegrationTests
     - TEST_SUITE=PluginTests
     - TEST_SUITE=CoreTests
-    - TEST_SUITE=IntegrationTests
   global:
     - secure: "AMhZmPZx4SUcuZRBzGHlQPxzM4D8FvFB3UThDa52gbi9KIBrwcumzV2VGi6B\n5fgjwtB4XTE1In7qhY2HMikPWBmWYYOQ5QcMPJsqqHt4iMmahx8WKzne6NOk\nNpqAuje/fulNGeP2LJZi0nrub3Fh4VwXaOvpNloKNQN/2JuqPtM="
     - secure: "DySde80fX3dw0osGY5s5lGiGLjMleUkkONsuRDC4xjT1hAQP94FGHpPXVZV8\nAQY0s8MQmcK2eRLOQrmE9Bh1XXbGqh40s66XhSWq0hulFHxQH5OLaZXccFeu\n5WxGkHXnNDIc+CVhXW/IIbHZPO1K6hffS8fuvP1o6mYgxwFL6Xw="

tests/PHPUnit/phpunit.xml.dist

@@ -30,9 +30,9 @@
 </php>
 
 <testsuites>
-    <testsuite name="IntegrationTests">
-        <directory>./Integration</directory>
-    </testsuite>
+  <testsuite name="IntegrationTests">
+      <directory>./Integration</directory>
+  </testsuite>
   <testsuite name="PluginTests">
       <directory>./Plugins</directory>
   </testsuite>