Add watch neutron.conf for dhcp agent on compute


Closes-Bug: PROD-22078
Change-Id: I26326227ccbec90807c99f257a37715af8face52
diff --git a/neutron/compute.sls b/neutron/compute.sls
index b7d802c..af5637f 100644
--- a/neutron/compute.sls
+++ b/neutron/compute.sls
@@ -15,6 +15,7 @@
     - names:
       - neutron-dhcp-agent
     - watch:
+      - file: /etc/neutron/neutron.conf
       - file: /etc/neutron/dhcp_agent.ini
     - require:
       - pkg: neutron_dhcp_agent_packages