[VOL-4363] Waiting for adapters.

Customising number of adapters required in the system.
Enabling deployment of custom adapter at a later time

Change-Id: Ia66505ee1676be52680a87647f888bb7706ef0cb
diff --git a/vars/waitForAdapters.groovy b/vars/waitForAdapters.groovy
index ab5f22b..661e089 100644
--- a/vars/waitForAdapters.groovy
+++ b/vars/waitForAdapters.groovy
@@ -11,6 +11,12 @@
 
     def cfg = defaultConfig + config
 
+    if (cfg.adaptersToWait == 0){
+       //no need to wait
+       println "No need to wait for adapters to be registered"
+       return
+    }
+
     println "Wait for adapters to be registered"
 
     // guarantee that at least the specified number of adapters are registered with VOLTHA before proceeding