fix(unit tests): moved kairosdb spec to it's plugin repo

public/test/specs/kairosdb-datasource-specs.js

-define([
-  './helpers',
-  'app/plugins/datasource/kairosdb/datasource'
-], function(helpers) {
-  'use strict';
-
-  describe('KairosDBDatasource', function() {
-    var ctx = new helpers.ServiceTestContext();
-
-    beforeEach(module('grafana.core'));
-    beforeEach(module('grafana.services'));
-
-    beforeEach(ctx.providePhase(['templateSrv']));
-    beforeEach(ctx.createService('KairosDBDatasource'));
-
-    beforeEach(function() {
-      ctx.ds = new ctx.service({ url: ''});
-    });
-
-    describe('When querying kairosdb with one target using query editor target spec', function() {
-      var results;
-      var urlExpected = "/api/v1/datapoints/query";
-      var bodyExpected = {
-        metrics: [{ name: "test" }],
-        cache_time: 0,
-        start_relative: {
-          value: "1",
-          unit: "hours"
-        }
-      };
-
-      var query = {
-        rangeRaw: { from: 'now-1h', to: 'now' },
-        targets: [{ metric: 'test', downsampling: '(NONE)'}]
-      };
-
-      var response = {
-        queries: [{
-          sample_size: 60,
-          results: [{
-            name: "test",
-            values: [[1420070400000, 1]]
-          }]
-        }]
-      };
-
-      beforeEach(function() {
-        ctx.$httpBackend.expect('POST', urlExpected, bodyExpected).respond(response);
-        ctx.ds.query(query).then(function(data) { results = data; });
-        ctx.$httpBackend.flush();
-      });
-
-      it('should generate the correct query', function() {
-        ctx.$httpBackend.verifyNoOutstandingExpectation();
-      });
-
-      it('should return series list', function() {
-        expect(results.data.length).to.be(1);
-        expect(results.data[0].target).to.be('test');
-      });
-
-    });
-
-  });
-
-});