Added node targetting to aptly promote pipeline to run the pipeline on HW slaves only

Change-Id: Ia21a6e66948a640cff913150e8dd260c90470041
diff --git a/aptly-promote-pipeline.groovy b/aptly-promote-pipeline.groovy
index 0f51a90..08ca507 100644
--- a/aptly-promote-pipeline.groovy
+++ b/aptly-promote-pipeline.groovy
@@ -26,7 +26,7 @@
 def insufficientPermissions = false
 
 timeout(time: 12, unit: 'HOURS') {
-  node() {
+  node("docker&&hardware") {
     try {
       stage("promote") {
         // promote is restricted to users in aptly-promote-users LDAP group