test: update unit test with DNS resolver operational data

With support for dns resolver in place, the ietf-system output needs to
be complemented with additional data collected from both the dnsmasq and
openresolv subsystems.

System date taken from 'client3' in the Infix DHCP server-subnets test.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

test/case/statd/system/ietf-system.json

@@ -93,6 +93,27 @@
           }
         ]
       }
+    },
+    "infix-system:dns-resolver": {
+      "options": {
+        "timeout": 3,
+        "attempts": 5
+      },
+      "server": [
+        {
+          "address": "1.2.3.4",
+          "origin": "static"
+        },
+        {
+          "address": "192.168.2.1",
+          "origin": "dhcp",
+          "interface": "e7"
+        }
+      ],
+      "search": [
+        "example.com",
+        "kernelkit.org"
+      ]
     }
   }
 }

test/case/statd/system/system/rootfs/etc/resolv.conf.head

@@ -0,0 +1,3 @@
+options timeout:3 attempts:5 
+search example.com kernelkit.org 
+nameserver 1.2.3.4

test/case/statd/system/system/run/+sbin+resolvconf_-l

@@ -0,0 +1,3 @@
+# resolv.conf from e7.conf
+nameserver 192.168.2.1 # e7
+