ARTEMIS-1684 remove native libs before ci build to avoid aio resource…

… constraints failing tests in error

(cherry picked from commit 65feda8)

.travis.yml

@@ -3,7 +3,10 @@ language: java
 install: true
 
 # clean out Artemis artifacts from the cache
-before_install: rm -rf $HOME/.m2/repository/org/apache/activemq/artemis-*
+# whack native libs such that LibAIO is not used till we figure out the resource constraints
+before_install:
+- rm -rf $HOME/.m2/repository/org/apache/activemq/artemis-*
+- rm artemis-native/bin/libartemis-native-*
 
 # use 'install' so smoke-tests will work
 # use '-Pextra-tests' to ensure extra-tests compiles even though they won't actually run