[travis-ci] re-arrange JDK 6 testing

Author: kares

.travis.yml

@@ -1,9 +1,8 @@
 language: ruby
 sudo: false
-rvm:
-  - jruby
+#rvm:
+#  - jruby
 jdk:
-  - openjdk6
   - oraclejdk7
   - oraclejdk8
 env:
@@ -29,14 +28,26 @@ matrix:
       rvm: jruby-1.7.24
     - env: TEST_COMMAND="jruby -S rake integration:install integration:test"
       rvm: jruby-1.7.18
-  exclude:
+  include:
+    - jdk: openjdk6
+      env: TEST_PROFILE=test-1.6.8
+      rvm: jruby-1.7.24
     - jdk: openjdk6
-      env: TEST_PROFILE=test-9.0.1.0
+      env: TEST_PROFILE=test-1.7.4
+      rvm: jruby-1.7.24
     - jdk: openjdk6
-      env: TEST_PROFILE=test-9.0.5.0
+      env: TEST_PROFILE=test-1.7.13
+      rvm: jruby-1.7.24
     - jdk: openjdk6
-      env: TEST_PROFILE=test-9.1.1.0
-  include:
+      env: TEST_PROFILE=test-1.7.18
+      rvm: jruby-1.7.24
+    - jdk: openjdk6
+      env: TEST_PROFILE=test-1.7.22
+      rvm: jruby-1.7.24
+    - jdk: openjdk6
+      env: TEST_PROFILE=test-1.7.24
+      rvm: jruby-1.7.24
+    #
     - jdk: oraclejdk8
       env: TEST_COMMAND="jruby -S rake integration:install integration:test"
       rvm: jruby-1.7.24