migrate centosalt from lxsoftadm01 to nomad

prod.repos.yaml

@@ -70,6 +70,13 @@ scientific-linux:
     - --max-delete=5000
     - --timeout=6000
 
+centosalt:
+  source: 'eu-msync.centos.org::altarch/'
+  destination: 'centos/altarch/'
+  extra_options:
+    - -aqz
+    - --delete
+
 centosdebuginfo:
   source: 'debuginfo.centos.org::centos-full-debuginfo/'
   destination: 'centos-debuginfo/'