Fix specs upload job and use scp instead of ftp

Change-Id: Ibd58fdcc99696c5732d62f959d6cb81767295a4e

modules/openstack_project/files/jenkins_job_builder/config/specs-jobs.yaml

@@ -12,12 +12,12 @@
           project: '{name}'
 
     publishers:
-      - ftp:
+      - scp:
-          site: 'specs.openstack.org'
+          site: 'static.openstack.org'
+          files:
+            - target: 'specs/{github-org}/{name}'
               source: 'doc/build/html/**'
-          target: '{github-org}/{name}'
+              keep-hierarchy: true
-          remove-prefix: 'doc/build/html'
-          excludes: ''
       - console-log
 
 - job-group: