iptables-persistent pkg is needed for manager state

The state uses iptables.append command in order to set up a rule for
health manager port. This command expects /etc/iptables/rules.v4,
which goes with iptables-persistent pkg.

Related PROD: PROD-11938

Change-Id: I34ba46f81e1d105ce5072aad4199ce87b6763828
diff --git a/octavia/map.jinja b/octavia/map.jinja
index 2052389..6052c47 100644
--- a/octavia/map.jinja
+++ b/octavia/map.jinja
@@ -21,7 +21,8 @@
 
 {% set manager = salt['grains.filter_by']({
     'Debian': {
-        'pkgs': ['octavia-common', 'octavia-worker', 'octavia-housekeeping', 'octavia-health-manager'],
+        'pkgs': ['octavia-common', 'octavia-worker', 'octavia-housekeeping',
+                 'octavia-health-manager', 'iptables-persistent'],
         'services': ['octavia-worker', 'octavia-housekeeping', 'octavia-health-manager'],
         'notification': False,
         'cors': {},
@@ -30,7 +31,8 @@
         }
     },
     'RedHat': {
-        'pkgs': ['octavia-common', 'octavia-worker', 'octavia-housekeeping', 'octavia-health-manager'],
+        'pkgs': ['octavia-common', 'octavia-worker', 'octavia-housekeeping',
+                 'octavia-health-manager', 'iptables-persistent'],
         'services': ['octavia-worker', 'octavia-housekeeping', 'octavia-health-manager'],
         'notification': False,
         'cors': {},