test: Add @expectedFailureFreeBSD decorators

http://llvm.org/pr17183 expression w/ varargs printf() fails
http://llvm.org/pr15302 'anonymous namespace' prefix missing


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@190415 91177308-0d34-0410-b5e6-96231b3b80d8