travis/appveyor config changes

.travis.yml

@@ -1,5 +1,10 @@
 dist: trusty
 language: java
+
+cache:
+  directories:
+  - $HOME/.m2
+
 # Travis CI provides OpenJDK 6, OpenJDK 7, Oracle JDK 7, and Oracle JDK 8.
 # Sun JDK 6 is not provided, because it is EOL as of November 2012.
 # OpenJDK 8 is available on our Trusty images, specify dist: trusty to make use of it.
@@ -9,6 +14,7 @@ jdk:
   - openjdk8
   - openjdk7
   #- openjdk6 #https://github.com/travis-ci/travis-ci/issues/8199
-cache:
-  directories:
-  - $HOME/.m2
+
+matrix:
+  allow_failures:
+  - jdk: openjdk7

appveyor.yml

@@ -9,9 +9,15 @@ skip_tags: true
 # enviroment settings
 environment:
   matrix:
+    - JAVA_HOME: C:\Program Files\Java\jdk1.6.0
     - JAVA_HOME: C:\Program Files\Java\jdk1.7.0
     - JAVA_HOME: C:\Program Files\Java\jdk1.8.0
 
+matrix:
+  allow_failures:
+    - JAVA_HOME: C:\Program Files\Java\jdk1.6.0
+    - JAVA_HOME: C:\Program Files\Java\jdk1.7.0
+
 # install required tools (maven, secure-file, encrypted files)
 install:
   - cmd: echo %JAVA_HOME%