Fixed pattern for output on unzipFile

In this case we can't expect that the string ends with the specified appExt, string may contain several spaces and line break.

For example: 

<pre> 'Archive:  /var/folders/4w/nmpy2_2961v2tdpyp2ln0zzm0000gn/T/114014-95194-qetvmq/appium-app.zip\n
  inflating: usr/share/nginx/www/payload/someapp-2.0.apk  \n'
</pre>