Bugfix/rn upgrade circleci and e2e (#1602)

* Fix circle ci and improve e2e

* Update config.yml

* install pods and fix removed command

* test another way to install pods

* yet another coocapods try

* trying brew install

* Moving cocapods install to pre release ios

* Install cocoapods with gem

* Trying increasing java memory on circleci pre release android

.circleci/config.yml

@@ -108,6 +108,8 @@ jobs:
           command: echo 'weew - everything passed!'
   publish-pre-release-android:
     working_directory:  ~/MetaMask
+    environment:
+      _JAVA_OPTIONS: -Xmx3g
     docker:
       - image: circleci/android:api-28-node8-alpha
     steps: