fixed releases and ios e2e on travis

.travis.yml

   - master
   - v2
 
+git:
+  depth: 999999999999
+
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
   - rm -fr $HOME/.gradle/caches/*/plugin-resolution/

e2e/Modals.test.js

+const Utils = require('./Utils');
+const elementByLabel = Utils.elementByLabel;
+
 describe('modal', () => {
   beforeEach(async () => {
     await device.relaunchApp();
     await expect(elementByLabel('React Native Navigation!')).toBeVisible();
   });
 });
-
-function elementByLabel(label) {
-  return element(by.label(label));
-}

e2e/ScreenStack.test.js

+const Utils = require('./Utils');
+const elementByLabel = Utils.elementByLabel;
+
 describe('screen stack', () => {
   beforeEach(async () => {
     await device.relaunchApp();
     await expect(elementByLabel('React Native Navigation!')).toBeVisible();
   });
 });
-
-function elementByLabel(label) {
-  return element(by.label(label));
-}

e2e/ScreenStyleStatic.test.js

+const Utils = require('./Utils');
+const elementByLabel = Utils.elementByLabel;
+
 describe('screen style - static', () => {
   beforeEach(async () => {
     await device.relaunchApp();
   });
 
   it('declare a navigationOptions on container component', async () => {
-    await element(by.label('Push Options Screen')).tap();
-    await expect(element(by.label('Static Title').and(by.type('UILabel')))).toBeVisible();
+    await elementByLabel('Push Options Screen').tap();
+    await expect(elementByLabel('Static Title').and(by.type('UILabel'))).toBeVisible();
   });
 });

e2e/TopLevelApi.test.js

+const Utils = require('./Utils');
+const elementByLabel = Utils.elementByLabel;
+
 describe('top level api', () => {
   beforeEach(async () => {
     await device.relaunchApp();
     await expect(elementByLabel('React Native Navigation!')).toBeVisible();
   });
 });
-
-function elementByLabel(label) {
-  return element(by.label(label));
-}

e2e/Utils.js

+module.exports = {
+  elementByLabel: (label) => {
+    return element(by.label(label));
+  }
+};