KNOX-2115 - Improve .travis.yml (#187)

Signed-off-by: Kevin Risden <krisden@apache.org>
diff --git a/.travis.yml b/.travis.yml
index 563e34b..6dd7dc5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,14 +25,13 @@
     
 env:
   global:
-  - DOCKERRUN="docker run -it --rm -v $PWD:/src -v $HOME/.m2:/root/.m2 -w /src"
+  - DOCKERRUN="docker run -it --rm -v $PWD:/src -v $HOME/.m2:/root/.m2 -v /var/run/docker.sock:/var/run/docker.sock -w /src"
 services:
   - docker
 before_install:
   - docker pull $IMAGE
 script:
-  # argLine to work around https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911925
-  - $DOCKERRUN $IMAGE mvn -T1C verify -Dsurefire.useFile=false -Djavax.net.ssl.trustStorePassword=changeit -DargLine="-Djdk.net.URLClassPath.disableClassPathURLCheck=true" -B -V
+  - $DOCKERRUN $IMAGE mvn -T.75C clean verify -U -Dsurefire.useFile=false -Djavax.net.ssl.trustStorePassword=changeit -B -V
   - shellcheck gateway-shell-release/home/bin/*.sh
   - shellcheck gateway-release/home/bin/*.sh
   - shellcheck gateway-release-common/home/bin/*.sh