fix conditional test running

Author: chingor13

.kokoro/build.sh

@@ -110,7 +110,7 @@ case ${JOB_TYPE} in
         -Djacoco.skip=true \
         -DskipUnitTests=true \
         -Dmaven.wagon.http.retryHandler.count=5 \
-        -T 1C ${SUREFIRE_JVM_OPT}
+        ${SUREFIRE_JVM_OPT}
 
       RETURN_CODE=$?
       popd

.kokoro/common.sh

@@ -204,7 +204,7 @@ function generate_modified_modules_list() {
     if [[ -n $modules ]]; then
       modules=$(echo "${modules}" | cut -d '/' -f1 | sort -u)
       for module in $modules; do
-        if [[ ! " ${excluded_modules[*]} " =~ " ${module} " && " ${maven_modules[*]} " =~ " ${module} " ]]; then
+        if [[ " ${maven_modules[*]} " =~ " ${module} " ]]; then
           modified_module_list+=("${module}")
         fi
       done