role service-dhcpd: update config for Kea 1.4-P1

roles/service-dhcpd/templates/kea_dhcp4.conf.j2

@@ -50,8 +50,7 @@
         },
         {
           "name": "domain-search",
-          "data": "{{ mesh.kea_dnssl_binary }}",
-          "csv-format": false
+          "data": "{% for dnssl in mesh.dnssl %}{{ dnssl }}{% if not loop.last %}, {% endif %}{% endfor %}"
         }
       ]
 {% if not loop.last %}
@@ -69,12 +68,12 @@
       "name": "kea-dhcp4",
       "output_options": [
           {
-            "output": "/var/log/kea-dhcp4.log"
+            "output": "/var/log/kea/kea-dhcp4.log"
           }
       ],
       "severity": "WARN",
       "debuglevel": 0
-    },
+    }
   ]
 }