trying to exclude some tests

.travis.yml

@@ -10,15 +10,20 @@ php:
 env:
   matrix:
     - TEST_SUITE=IntegrationTests MYSQL_ADAPTER=PDO_MYSQL
-    - TEST_SUITE=IntegrationTests MYSQL_ADAPTER=MYSQLI
     - TEST_SUITE=PluginTests MYSQL_ADAPTER=PDO_MYSQL
-    - TEST_SUITE=PluginTests MYSQL_ADAPTER=MYSQLI
     - TEST_SUITE=CoreTests MYSQL_ADAPTER=PDO_MYSQL
-    - TEST_SUITE=CoreTests MYSQL_ADAPTER=MYSQLI
+    - TEST_SUITE=IntegrationTests MYSQL_ADAPTER=MYSQLI
   global:
     - secure: "AMhZmPZx4SUcuZRBzGHlQPxzM4D8FvFB3UThDa52gbi9KIBrwcumzV2VGi6B\n5fgjwtB4XTE1In7qhY2HMikPWBmWYYOQ5QcMPJsqqHt4iMmahx8WKzne6NOk\nNpqAuje/fulNGeP2LJZi0nrub3Fh4VwXaOvpNloKNQN/2JuqPtM="
     - secure: "DySde80fX3dw0osGY5s5lGiGLjMleUkkONsuRDC4xjT1hAQP94FGHpPXVZV8\nAQY0s8MQmcK2eRLOQrmE9Bh1XXbGqh40s66XhSWq0hulFHxQH5OLaZXccFeu\n5WxGkHXnNDIc+CVhXW/IIbHZPO1K6hffS8fuvP1o6mYgxwFL6Xw="
 
+matrix:
+  exclude:
+  - php: 5.4
+    env: TEST_SUITE=IntegrationTests MYSQL_ADAPTER=MYSQLI
+  - php: 5.5
+    env: TEST_SUITE=IntegrationTests MYSQL_ADAPTER=MYSQLI
+
 script: ./travis.sh
 
 before_script: