Fix gradle path/home setup on buildserver

buildserver/cookbooks/fdroidbuild-general/recipes/default.rb

@@ -1,4 +1,6 @@
 
+user = node[:settings][:user]
+
 %w{ant ant-contrib autoconf autopoint bison cmake expect libtool libssl1.0.0 libssl-dev maven openjdk-7-jdk javacc python git-core mercurial subversion bzr git-svn make perlmagick pkg-config zip ruby rubygems librmagick-ruby yasm imagemagick}.each do |pkg|
   package pkg do
     action :install