fix(test): improve $cookie service test to work with Safari 5.1
fix(test): improve $cookie service test to work with Safari 5.1

the max size for safari cookies has changed sligtly so I had to adjust
the test to make cookie creation fail on this browser

ammula88/angular.js,ammula88/angular.js,ammula88/angular.js,ammula88/angular.js,ammula88/angular.js