Add INCLUDE statement to include records from other domains (#1219)

pkg/js/parse_tests/039-include.js

@@ -0,0 +1,12 @@
+
+var REG = NewRegistrar("Third-Party","NONE");
+var CF = NewDnsProvider("Cloudflare", "CLOUDFLAREAPI");
+
+D("foo.com!external",REG,DnsProvider(CF),
+    A("@","1.2.3.4")
+);
+
+D("foo.com!internal",REG,DnsProvider(CF),
+  INCLUDE("foo.com!external"),
+  A("local","127.0.0.1")
+);

pkg/js/parse_tests/039-include.json

@@ -0,0 +1,49 @@
+{
+  "registrars": [
+    {
+      "name": "Third-Party",
+      "type": "NONE"
+    }
+  ],
+  "dns_providers": [
+    {
+      "name": "Cloudflare",
+      "type": "CLOUDFLAREAPI"
+    }
+  ],
+  "domains": [
+    {
+      "name": "foo.com!external",
+      "registrar": "Third-Party",
+      "dnsProviders": {
+        "Cloudflare": -1
+      },
+      "records": [
+        {
+          "type": "A",
+          "name": "@",
+          "target": "1.2.3.4"
+        }
+      ]
+    },
+    {
+      "name": "foo.com!internal",
+      "registrar": "Third-Party",
+      "dnsProviders": {
+        "Cloudflare": -1
+      },
+      "records": [
+        {
+          "type": "A",
+          "name": "@",
+          "target": "1.2.3.4"
+        },
+        {
+          "type": "A",
+          "name": "local",
+          "target": "127.0.0.1"
+        }
+      ]
+    }
+  ]
+}