ci: correctly export RBE_experimental_credentials_helper_args (#40997)

.circleci/config/base.yml

@@ -357,6 +357,7 @@ step-setup-rbe-for-build: &step-setup-rbe-for-build
       $HELPER login
       echo 'export RBE_service='`node -e "console.log(require('./src/utils/reclient.js').serviceAddress)"` >> $BASH_ENV
       echo 'export RBE_experimental_credentials_helper='`node -e "console.log(require('./src/utils/reclient.js').helperPath)"` >> $BASH_ENV
+      echo 'export RBE_experimental_credentials_helper_args="print"' >> $BASH_ENV
 
 step-restore-brew-cache: &step-restore-brew-cache
   restore_cache:

appveyor-woa.yml

@@ -113,6 +113,8 @@ for:
           $env:RBE_service = node -e "console.log(require('./src/utils/reclient.js').serviceAddress)"
       - ps: >-
           $env:RBE_experimental_credentials_helper = $env:RECLIENT_HELPER
+      - ps: >-
+          $env:RBE_experimental_credentials_helper_args = "print"
       - cd ..\..
       - ps: $env:CHROMIUM_BUILDTOOLS_PATH="$pwd\src\buildtools"
       - ps: >-

appveyor.yml

@@ -111,6 +111,8 @@ for:
           $env:RBE_service = node -e "console.log(require('./src/utils/reclient.js').serviceAddress)"
       - ps: >-
           $env:RBE_experimental_credentials_helper = $env:RECLIENT_HELPER
+      - ps: >-
+          $env:RBE_experimental_credentials_helper_args = "print"
       - cd ..\..
       - ps: $env:CHROMIUM_BUILDTOOLS_PATH="$pwd\src\buildtools"
       - ps: >-