reenable unit test execution

hadoop-ozone/dev-support/checks/unit.sh

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 export MAVEN_OPTS="-Xmx4096m"
-#mvn -fn test -f pom.ozone.xml -pl \!:hadoop-ozone-integration-test,\!:hadoop-ozone-filesystem
+mvn -fn test -f pom.ozone.xml -pl \!:hadoop-ozone-integration-test,\!:hadoop-ozone-filesystem
 module_failed_tests=$(find "." -name 'TEST*.xml' -print0 \
     | xargs -n1 -0 "grep" -l -E "<failure|<error"\
     | awk -F/ '{sub("'"TEST-JUNIT_TEST_OUTPUT_DIR"'",""); sub(".xml",""); print $NF}')