chore: set env vars for tests and make it executable (#204)

Author: anguillanneuf

…pubsub/.kokoro/nightly/jave8-samples.cfg …pubsub/.kokoro/nightly/java8-samples.cfgjava-pubsub/.kokoro/nightly/jave8-samples.cfg renamed to java-pubsub/.kokoro/nightly/java8-samples.cfg java-pubsub/.kokoro/nightly/jave8-samples.cfg renamed to java-pubsub/.kokoro/nightly/java8-samples.cfg

@@ -28,6 +28,10 @@ cd ${scriptDir}/..
 # include common functions
 source ${scriptDir}/common.sh
 
+# Setup required env variables
+source ${KOKORO_GFILE_DIR}/pubsub_secrets.txt
+echo "********** Successfully Set All Environment Variables **********"
+
 # Attempt to install 3 times with exponential backoff (starting with 10 seconds)
 retry_with_backoff 3 10 \
   mvn install -B -V \
@@ -48,4 +52,4 @@ cd samples/
 
 echo -e "\n******************** RUNNING SAMPLE TESTS ********************"
 
-mvn --fail-at-end clean verify
+mvn --fail-at-end clean verify