Update flaky integration tests

Author: codenirvana

test/integration/sanity/head-request.test.js

@@ -8,21 +8,8 @@ describe('HEAD requests', function () {
             collection: {
                 item: [{
                     request: {
-                        url: 'http://google.com',
-                        method: 'HEAD',
-                        body: {
-                            mode: 'formdata',
-                            formdata: []
-                        }
-                    }
-                }, {
-                    request: {
-                        url: 'http://github.com',
-                        method: 'HEAD',
-                        body: {
-                            mode: 'formdata',
-                            formdata: []
-                        }
+                        url: global.servers.http,
+                        method: 'HEAD'
                     }
                 }]
             }
@@ -35,18 +22,13 @@ describe('HEAD requests', function () {
     it('should have completed the HEAD requests successfully', function () {
         expect(testrun).to.be.ok;
         expect(testrun).to.nested.include({
-            'request.calledTwice': true
+            'request.calledOnce': true
         });
 
         expect(testrun.request.getCall(0)).to.nested.include({
             'args[0]': null,
             'args[2].code': 200
         });
-
-        expect(testrun.request.getCall(1)).to.nested.include({
-            'args[0]': null,
-            'args[2].code': 200
-        });
     });
 
     it('should have completed the run', function () {

test/integration/sanity/proxy-http.test.js

@@ -8,8 +8,8 @@ var ProxyConfigList = require('postman-collection').ProxyConfigList,
         var proxyPort,
             proxyHost,
             proxyUrlForHttpRequest,
-            sampleHttpUrl = 'http://google.com',
-            sampleHttpsUrl = 'https://google.com';
+            sampleHttpUrl = 'http://postman.com',
+            sampleHttpsUrl = 'https://postman.com';
 
         before(function (done) {
             proxyHost = 'localhost';

test/integration/sanity/response-size.test.js

@@ -9,7 +9,7 @@ describe('response size', function () {
                 item: [{
                     request: 'https://postman-echo.com/get'
                 }, {
-                    request: 'https://google.com/'
+                    request: 'https://httpbin.org/get'
                 }]
             }
         }, function (err, results) {

test/integration/sanity/systemproxy.test.js

@@ -9,8 +9,8 @@ var expect = require('chai').expect,
             proxyUrlForHttpRequest,
             systemProxyCalled = false,
             proxyHost = 'localhost',
-            sampleHttpUrl = 'http://google.com',
-            sampleHttpsUrl = 'https://google.com';
+            sampleHttpUrl = 'http://postman.com',
+            sampleHttpsUrl = 'https://postman.com';
 
         before(function (done) {
             proxyPort = global.servers.proxy.split(':')[2];
@@ -119,8 +119,8 @@ var expect = require('chai').expect,
             proxyUrlForHttpRequest,
             proxyHost = 'localhost',
             systemProxyCalled = false,
-            sampleHttpUrl = 'http://google.com',
-            sampleHttpsUrl = 'https://google.com';
+            sampleHttpUrl = 'http://postman.com',
+            sampleHttpsUrl = 'https://postman.com';
 
         before(function (done) {
             globalProxyPort = global.servers.proxy.split(':')[2];