PSA ARCH: Specific version by paramter

PSA_ARCH_TESTS_VERSION

Signed-off-by: Karl Zhang <karl.zhang@arm.com>
Change-Id: I9379bfb29298baeb867ea7474aa7891f983ca7ed
diff --git a/jenkins/build-config.jpl b/jenkins/build-config.jpl
index b9b4f21..ecfa1a7 100644
--- a/jenkins/build-config.jpl
+++ b/jenkins/build-config.jpl
@@ -82,7 +82,7 @@
             $class: 'GitSCM',
             branches: [[name: 'FETCH_HEAD']],
             userRemoteConfigs: [[
-              refspec: 'refs/tags/v20.03_API1.0',
+              refspec: '$PSA_ARCH_TESTS_VERSION',
               url: params.PSA_ARCH_TESTS_URL
             ]]
           ]