Switch to Mbed-TLS/mbedtls.git and Mbed-TLS/mbedtls-test.git

mbedtls.git and mbedtls-test.git have been moved to under https://github.com/Mbed-TLS
So, modify jobs accordingly.

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: Ifb2d1b8794482c22b3d70a1a5125d35c864db501
diff --git a/mbed-tls-nightly-tests.yaml b/mbed-tls-nightly-tests.yaml
index 8bd3266..782aff3 100644
--- a/mbed-tls-nightly-tests.yaml
+++ b/mbed-tls-nightly-tests.yaml
@@ -5,7 +5,7 @@
     name: mbed-tls-nightly-tests
     parameters:
     - string:
-        default: https://github.com/ARMmbed/mbedtls.git
+        default: https://github.com/Mbed-TLS/mbedtls.git
         description: Enter mbed TLS repo/fork
         name: MBED_TLS_REPO
         trim: 'false'
@@ -109,7 +109,7 @@
       - git:
           branches:
           - 'master'
-          url: https://github.com/ARMmbed/mbedtls-test.git
+          url: https://github.com/Mbed-TLS/mbedtls-test.git
       script-path: vars/mbedtls-release-Jenkinsfile
     project-type: pipeline
     properties: