Revert "allow host name resolution for for voltha-api and etcd ingress"

We need to revert this, since the Jenkins user is not allowed to modify the /etc/hosts file without further privilege escalation (which might introduce security holes)

This reverts commit 1ba6746260f8efd01e54e74ec408aebbb61cdcb9.

Change-Id: Ia1fc52128a95f93b980843fe2d1abaecfdd51675
Signed-off-by: Jan Klare <jan.klare@bisdn.de>
diff --git a/jjb/pipeline/voltha/physical-build.groovy b/jjb/pipeline/voltha/physical-build.groovy
index 17d48b3..9dfb588 100755
--- a/jjb/pipeline/voltha/physical-build.groovy
+++ b/jjb/pipeline/voltha/physical-build.groovy
@@ -16,6 +16,7 @@
 
 // NOTE we are importing the library even if it's global so that it's
 // easier to change the keywords during a replay
+
 library identifier: 'cord-jenkins-libraries@master',
     retriever: modernSCM([
       $class: 'GitSCMSource',