androiddeployqt: Support spaces in jarsigner arguments

The input to the jarsigner (specifically the password, alias,
file name, etc.) can contain spaces, so the arguments need
to be quoted.

[ChangeLog][Android][androiddeployqt] Fixed signing packages
using arguments containing spaces.

Task-number: QTBUG-36327
Change-Id: Ie673ab91da4ffe074851a6ddef96efbb7657636b
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Christian Stromme <christian.stromme@digia.com>