fix rtdb emulator ports

Author: nbransby

firebase-database/src/commonTest/kotlin/dev.gitlive.firebase.database/database.kt

@@ -34,7 +34,7 @@ class database {
                         gcmSenderId = "846484016111"
                     )
                 )
-                Firebase.database.useEmulator(emulatorHost, 8080)
+                Firebase.database.useEmulator(emulatorHost, 9000)
             }
     }
 

test/database.rules.json

@@ -0,0 +1,6 @@
+{
+  "rules": {
+    ".read": true,
+    ".write": true
+  }
+}

test/firebase.json

@@ -2,12 +2,18 @@
   "firestore": {
     "rules": "firestore.rules"
   },
+  "database": {
+    "rules": "database.rules.json"
+  },
   "emulators": {
     "auth": {
       "port": 9099
     },
     "firestore": {
       "port": 8080
+    },
+    "database": {
+      "port": 9000
     }
   }
 }