Remove dns servers from server_signal template

There is no way to overwrite dns servers list, so
remove them to use cluster network settings directly.

Change-Id: I08350018d348684256d32b5f37117c21babc6ab5
Closes-Bug: PRODX-1110
Related-Prod: PRODX-22660

(cherry picked from commit 1db1ea67c652914adfa1a127236a8662bf4de1f7)
Change-Id: I6e49d5664e975443dfb92fe88f19eeecb9a4258b
1 file changed