Arthur: checkout from the official repo

arthur-mbed-tls-nightly-tests.yaml
arthur-mbedtls-release-ci-testing.yaml

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: I46260d736b73596b75affbe2a68903389d0b6130
diff --git a/arthur-mbedtls-release-ci-testing.yaml b/arthur-mbedtls-release-ci-testing.yaml
index 4a7826a..51b56de 100644
--- a/arthur-mbedtls-release-ci-testing.yaml
+++ b/arthur-mbedtls-release-ci-testing.yaml
@@ -112,17 +112,17 @@
         name: PUSH_COVERITY
     - git-parameter:
         name: TEST_BRANCH
-        description: Branch or tag in https://github.com/arthur-she/mbedtls-test (forks are not supported)
+        description: Branch or tag in https://github.com/ARMmbed/mbedtls-test (forks are not supported)
         type: PT_BRANCH_TAG
         quickFilterEnabled: True
-        defaultValue: leo-mbedtls-open-ci-notify-github-staging-testing
+        defaultValue: master
     pipeline-scm:
       lightweight-checkout: false
       scm:
       - git:
           branches:
           - ${TEST_BRANCH}
-          url: https://github.com/arthur-she/mbedtls-test.git
+          url: https://github.com/ARMmbed/mbedtls-test.git
       script-path: vars/mbedtls-release-Jenkinsfile
     project-type: pipeline
     properties:
@@ -145,7 +145,7 @@
         load-from-master: false
         override-build-parameters: false
         properties-content: |-
-          GIT_CREDENTIALS_ID= d015f9b1-4800-4a81-86b3-9dbadc18ee00
+          GIT_CREDENTIALS_ID=mbedtls-github-ssh
           TEST_PASS_EMAIL_ADDRESS=arthur.she@linaro.org
           TEST_FAIL_EMAIL_ADDRESS=arthur.she@linaro.org