MXS-1220: Fix resource self links

The top level resource self links pointed to the collection instead of the
resource itself. The individual resoures now also have a links field that
contains the self link to the resource. This should make navigation of the
API easier as all objects have valid links in them.

server/core/test/rest-api/test/schema_validation.js

@@ -62,3 +62,47 @@ describe("Individual Resources", function() {
 
     after(stopMaxScale)
 });
+
+describe("Resource Self Links", function() {
+    before(startMaxScale)
+
+    var tests = [
+        "/servers",
+        "/sessions",
+        "/services",
+        "/monitors",
+        "/filters",
+        "/maxscale/threads",
+        "/maxscale/modules",
+        "/maxscale/tasks",
+        "/servers/server1",
+        "/servers/server2",
+        "/services/RW-Split-Router",
+        "/services/RW-Split-Router/listeners",
+        "/monitors/MySQL-Monitor",
+        "/filters/Hint",
+        "/sessions/1",
+        "/maxscale/",
+        "/maxscale/threads/0",
+        "/maxscale/logs",
+        "/maxscale/modules/readwritesplit",
+    ]
+
+    tests.forEach(function(endpoint) {
+        it(endpoint + ': correct self link', function() {
+            var obj = null;
+            return request.get(base_url + endpoint)
+                .then(function(resp) {
+                    obj = JSON.parse(resp)
+                    return request.get(obj.links.self)
+                })
+                .then(function(resp) {
+                    var obj_self = JSON.parse(resp)
+                    obj_self.links.self.should.be.equal(obj.links.self)
+                })
+            .should.be.fulfilled
+        });
+    })
+
+    after(stopMaxScale)
+});