all: fix integration CI (#3222)

Proto- and grpc- packages have moved to this repository.
When we run integration on CI, we must build them, otherwise the
tasks will fail from not being able to find dependencies.

utilities/verify_single_it.sh

@@ -15,16 +15,8 @@ fi
 export GCLOUD_PROJECT="$GCLOUD_PROJECT"
 export GOOGLE_APPLICATION_CREDENTIALS=$(realpath "$GOOGLE_APPLICATION_CREDENTIALS")
 
-echo "----- building and installing google-cloud-bom -----"
-mvn -B -pl google-cloud-bom install -DskipTests
-
-echo "----- building and installing parent pom -----"
-mvn -B -N install -DskipTests
-
-echo "----- building and installing shared modules -----"
-# storage is present because google-cloud-bigquery and google-cloud-notification depend on it
-# pubsub is present because google-cloud-notification depends on it
-mvn -B -pl google-cloud-core,google-cloud-core-http,google-cloud-core-grpc,google-cloud-storage,google-cloud-pubsub install -DskipTests
+echo "----- installing modules -----"
+mvn -B install -DskipTests
 
 echo "----- running integration tests -----"
 mvn -B -pl $MODULE -DtrimStackTrace=false -fae verify ${ARGS}