build(java): set GOOGLE_CLOUD_PROJECT env for samples/integration tests (#484)

* build(java): set GOOGLE_CLOUD_PROJECT env variable for samples/integration tests

* ci: use java-docs-samples-testing for sample tests

Author: chingor13

synthtool/gcp/templates/java_library/.kokoro/nightly/integration.cfg

@@ -10,20 +10,25 @@ env_vars: {
   key: "JOB_TYPE"
   value: "integration"
 }
-
+# TODO: remove this after we've migrated all tests and scripts
 env_vars: {
   key: "GCLOUD_PROJECT"
   value: "gcloud-devel"
 }
 
+env_vars: {
+  key: "GOOGLE_CLOUD_PROJECT"
+  value: "gcloud-devel"
+}
+
 env_vars: {
   key: "ENABLE_BUILD_COP"
   value: "true"
 }
 
 env_vars: {
-    key: "GOOGLE_APPLICATION_CREDENTIALS"
-    value: "keystore/73713_java_it_service_account"
+  key: "GOOGLE_APPLICATION_CREDENTIALS"
+  value: "keystore/73713_java_it_service_account"
 }
 
 before_action {

synthtool/gcp/templates/java_library/.kokoro/nightly/samples.cfg

@@ -11,9 +11,15 @@ env_vars: {
   value: "samples"
 }
 
+# TODO: remove this after we've migrated all tests and scripts
 env_vars: {
   key: "GCLOUD_PROJECT"
-  value: "gcloud-devel"
+  value: "java-docs-samples-testing"
+}
+
+env_vars: {
+  key: "GOOGLE_CLOUD_PROJECT"
+  value: "java-docs-samples-testing"
 }
 
 env_vars: {

synthtool/gcp/templates/java_library/.kokoro/presubmit/integration.cfg

@@ -11,14 +11,20 @@ env_vars: {
   value: "integration"
 }
 
+# TODO: remove this after we've migrated all tests and scripts
 env_vars: {
-    key: "GCLOUD_PROJECT"
-    value: "gcloud-devel"
+  key: "GCLOUD_PROJECT"
+  value: "gcloud-devel"
 }
 
 env_vars: {
-    key: "GOOGLE_APPLICATION_CREDENTIALS"
-    value: "keystore/73713_java_it_service_account"
+  key: "GOOGLE_CLOUD_PROJECT"
+  value: "gcloud-devel"
+}
+
+env_vars: {
+  key: "GOOGLE_APPLICATION_CREDENTIALS"
+  value: "keystore/73713_java_it_service_account"
 }
 
 before_action {

synthtool/gcp/templates/java_library/.kokoro/presubmit/samples.cfg

@@ -11,14 +11,20 @@ env_vars: {
   value: "samples"
 }
 
+# TODO: remove this after we've migrated all tests and scripts
 env_vars: {
-    key: "GCLOUD_PROJECT"
-    value: "gcloud-devel"
+  key: "GCLOUD_PROJECT"
+  value: "java-docs-samples-testing"
 }
 
 env_vars: {
-    key: "GOOGLE_APPLICATION_CREDENTIALS"
-    value: "keystore/73713_java_it_service_account"
+  key: "GOOGLE_CLOUD_PROJECT"
+  value: "java-docs-samples-testing"
+}
+
+env_vars: {
+  key: "GOOGLE_APPLICATION_CREDENTIALS"
+  value: "keystore/73713_java_it_service_account"
 }
 
 before_action {