chore: enable flakybot for nightly/continuous ITs (#1104)

* chore: enable flakybot on integration test jobs

Author: rajatbhatta

.kokoro/continuous/integration-cloud-devel.cfg

@@ -44,3 +44,8 @@ env_vars: {
   key: "REPORT_COVERAGE"
   value: "true"
 }
+
+env_vars: {
+  key: "ENABLE_FLAKYBOT"
+  value: "true"
+}

.kokoro/continuous/integration-cloud-staging.cfg

@@ -44,3 +44,8 @@ env_vars: {
   key: "REPORT_COVERAGE"
   value: "true"
 }
+
+env_vars: {
+  key: "ENABLE_FLAKYBOT"
+  value: "true"
+}

.kokoro/nightly/integration-cloud-devel.cfg

@@ -11,17 +11,6 @@ env_vars: {
   value: "integration-cloud-devel"
 }
 
-# TODO: remove this after we've migrated all tests and scripts
-env_vars: {
-  key: "GCLOUD_PROJECT"
-  value: "span-cloud-testing"
-}
-
-env_vars: {
-  key: "GOOGLE_CLOUD_PROJECT"
-  value: "span-cloud-testing"
-}
-
 env_vars: {
   key: "GOOGLE_APPLICATION_CREDENTIALS"
   value: "secret_manager/java-client-testing"
@@ -31,3 +20,8 @@ env_vars: {
   key: "SECRET_MANAGER_KEYS"
   value: "java-client-testing"
 }
+
+env_vars: {
+  key: "ENABLE_FLAKYBOT"
+  value: "true"
+}

.kokoro/nightly/integration-cloud-staging.cfg

@@ -11,17 +11,6 @@ env_vars: {
   value: "integration-cloud-staging"
 }
 
-# TODO: remove this after we've migrated all tests and scripts
-env_vars: {
-  key: "GCLOUD_PROJECT"
-  value: "span-cloud-testing"
-}
-
-env_vars: {
-  key: "GOOGLE_CLOUD_PROJECT"
-  value: "span-cloud-testing"
-}
-
 env_vars: {
   key: "GOOGLE_APPLICATION_CREDENTIALS"
   value: "secret_manager/java-client-testing"
@@ -31,3 +20,8 @@ env_vars: {
   key: "SECRET_MANAGER_KEYS"
   value: "java-client-testing"
 }
+
+env_vars: {
+  key: "ENABLE_FLAKYBOT"
+  value: "true"
+}