chore: Trigger all ITs to run

Author: lqiu96

.kokoro/common.sh

@@ -71,7 +71,7 @@ function parse_submodules() {
 
     # Use grep to find the modules in the aggregator pom file
     # Faster than invoking mvn help:evaluate to list all the project modules
-    modules=$(grep '<module>' "$1/pom.xml" | sed 's/.*<module>\(.*\)<\/module>.*/\1/')
+    modules=$(grep '<module>' "$1/pom.xml" | sed 's/.*<module>\(.*\)<\/module>.*/\1/' || true)
     if [ -n "$modules" ]; then
       for submodule in $modules; do
         # Each entry = <folder>/<submodule>

google-cloud-pom-parent/pom.xml

@@ -11,6 +11,7 @@
   <url>https://github.com/googleapis/google-cloud-java</url>
   <description>
     The top-level parent for all modules in the repository.
+    
   </description>
   <parent>
     <groupId>com.google.cloud</groupId>