tests: Added VPC network constants to common file instead of continuous (#1204)

Author: ivanmkc

.kokoro/continuous/common.cfg

@@ -29,3 +29,7 @@ env_vars: {
  key: "BUILD_SPECIFIC_GCLOUD_PROJECT"
  value: "ucaip-sample-tests"
 }
+env_vars {
+ key: "_VPC_NETWORK_URI"
+ value: "projects/580378083368/global/networks/system-tests"
+}

.kokoro/continuous/continuous.cfg

@@ -1,6 +1 @@
 # Format: //devtools/kokoro/config/proto/build.proto
-
-env_vars {
- key: "_VPC_NETWORK_URI"
- value: "projects/580378083368/global/networks/system-tests"
-}

owlbot.py

@@ -97,7 +97,6 @@
  excludes=[
  ".coveragerc",
  ".kokoro/continuous/common.cfg",
- ".kokoro/continuous/continuous.cfg",
  ".kokoro/presubmit/presubmit.cfg",
  ".github/CODEOWNERS",
  ".github/workflows", # exclude gh actions as credentials are needed for tests