Add stack sanitization support to vagrant_kasan



git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@2170 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5
Fix kernel config in vagrant_kasan



git-svn-id: http://address-sanitizer.googlecode.com/svn/trunk@2171 3c3640eb-14a6-2bb8-0b94-e9e73afe33f5