[VOL-4445] Correct error type to proceed with deletion with half route

Also moving deletion of logical device and meters to correct place in transitions.go

Change-Id: I9eee03edba9ae47ec09fc3b752082a740ee0efde
diff --git a/.gitignore b/.gitignore
index 9a6c87e..ff30e99 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,3 +62,4 @@
 
 # etcd - ?
 rw_core/core/voltha.rwcore.nb.etcd/
+rw_core/core/device/voltha.rwcore.da.etcd/