[Minor] Update the tests to use the master branch version for 1.5.0 release (#1438)

diff --git a/samza-test/src/main/config/join/README b/samza-test/src/main/config/join/README
index bf9a385..1bb220e 100644
--- a/samza-test/src/main/config/join/README
+++ b/samza-test/src/main/config/join/README
@@ -44,17 +44,17 @@
 > cd $HELLO_SAMZA_SRC
 > for i in zookeeper kafka yarn; do ./bin/grid install $i; ./bin/grid start $i; done
 
-Update the "yarn.package.path" to $DEPLOY_DIR/samza-test_2.11-1.5.0-SNAPSHOT.tgz
+Update the "yarn.package.path" to $DEPLOY_DIR/samza-test_2.11-1.6.0-SNAPSHOT.tgz
 > cd $SAMZA_SRC
 > vi samza-test/src/main/config/join/common.properties
-yarn.package.path=file:///path/to/samza-hello-samza/deploy/samza-test_2.11-1.5.0-SNAPSHOT.tgz
+yarn.package.path=file:///path/to/samza-hello-samza/deploy/samza-test_2.11-1.6.0-SNAPSHOT.tgz
 
 Then release and extract the test tarball:
 > cd $SAMZA_SRC
 > ./gradlew releaseTestJobs
-> cp samza-test/build/distributions/samza-test_2.11-1.5.0-SNAPSHOT.tgz $DEPLOY_DIR
+> cp samza-test/build/distributions/samza-test_2.11-1.6.0-SNAPSHOT.tgz $DEPLOY_DIR
 > mkdir $DEPLOY_DIR/samza
-> tar -xvf $DEPLOY_DIR/samza-test_2.11-1.5.0-SNAPSHOT.tgz -C $DEPLOY_DIR/samza
+> tar -xvf $DEPLOY_DIR/samza-test_2.11-1.6.0-SNAPSHOT.tgz -C $DEPLOY_DIR/samza
 
 Finally, create the kafka topics and start the samza jobs:
 > ./bin/setup-int-test.sh $DEPLOY_DIR
diff --git a/samza-test/src/main/python/configs/tests.json b/samza-test/src/main/python/configs/tests.json
index 1e54929..7f5d5da 100644
--- a/samza-test/src/main/python/configs/tests.json
+++ b/samza-test/src/main/python/configs/tests.json
@@ -1,5 +1,5 @@
 {
-  "samza_executable": "samza-test_2.11-1.5.0-SNAPSHOT.tgz",
+  "samza_executable": "samza-test_2.11-1.6.0-SNAPSHOT.tgz",
   "samza_install_path": "deploy/smoke_tests",
   "samza_config_loader_factory": "org.apache.samza.config.loaders.PropertiesConfigLoaderFactory"
 }
diff --git a/samza-test/src/main/python/stream_processor.py b/samza-test/src/main/python/stream_processor.py
index dabf8e4..f42590b 100644
--- a/samza-test/src/main/python/stream_processor.py
+++ b/samza-test/src/main/python/stream_processor.py
@@ -43,7 +43,7 @@
         logger.info('Running processor start command: {0}'.format(self.processor_start_command))
         self.deployment_config = {
             'install_path': os.path.join(runtime.get_active_config('remote_install_path'), 'deploy/{0}'.format(self.processor_id)),
-            'executable': 'samza-test_2.11-1.5.0-SNAPSHOT.tgz',
+            'executable': 'samza-test_2.11-1.6.0-SNAPSHOT.tgz',
             'post_install_cmds': [],
             'start_command': self.processor_start_command,
             'stop_command': '',