Switch Jenkins DT on TLS/HTTPS scheme

Change-Id: I82b2d094da87668eb762ad4e5674e4e67561edd4
Related-Prod: PROD-27541 (PROD:27541)
(cherry-picked from commit 1cfead8d9d2c13241a5b62b4dac657b6bb1cd479)
diff --git a/defaults/jenkins.yml b/defaults/jenkins.yml
index d01bf4e..68d843d 100644
--- a/defaults/jenkins.yml
+++ b/defaults/jenkins.yml
@@ -1,6 +1,6 @@
 parameters:
   _param:
     jenkins_master_port: 8081
-    jenkins_master_protocol: http
+    jenkins_master_protocol: https
     jenkins_pipelines_branch: "master"
     jenkins_salt_api_url: "https://${_param:salt_master_host}:${_param:nginx_proxy_salt_api_site_port}"