chore(travis): Increase android emulator timeout

.travis.yml

@@ -33,8 +33,9 @@ before_script:
 - npm install
 - echo no | android create avd --force -n $AVD_NAME -t android-$EMULATOR_API_VER --abi
   default/armeabi-v7a -c 12M
-- emulator -avd $AVD_NAME -no-audio -no-window &
-- android-wait-for-emulator
+- emulator -avd $AVD_NAME -no-audio -no-skin -no-window &
+# - android-wait-for-emulator
+- ./build/travis-scripts/android-wait-for-emulator
 - adb shell input keyevent 82 &
 script:
 - jdk_switcher use oraclejdk8

build/travis-scripts/android-wait-for-emulator

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+# Originally written by Ralf Kistner <ralf@embarkmobile.com>, but placed in the public domain
+# https://github.com/travis-ci/travis-cookbooks/blob/master/community-cookbooks/android-sdk/files/default/android-wait-for-emulator
+
+set +e
+
+bootanim=""
+failcounter=0
+timeout_in_sec=600 # 10 minutes
+
+until [[ "$bootanim" =~ "stopped" ]]; do
+  bootanim=`adb -e shell getprop init.svc.bootanim 2>&1 &`
+  if [[ "$bootanim" =~ "device not found" || "$bootanim" =~ "device offline"
+    || "$bootanim" =~ "running" ]]; then
+    let "failcounter += 1"
+    echo "Waiting for emulator to start"
+    if [[ $failcounter -gt timeout_in_sec ]]; then
+      echo "Timeout ($timeout_in_sec seconds) reached; failed to start emulator"
+      exit 1
+    fi
+  fi
+  sleep 1
+done
+
+echo "Emulator is ready"