Added test for anchor/alias in flow
Added test for anchor/alias in flow

jbeder/yaml-cpp.emitter-refactor,liam-middlebrook/yaml-cpp.emitter-refactor,sravanimantha/yaml-cpp.new-api,liam-middlebrook/yaml-cpp.new-api,kastnermario/yaml-cpp,certik/yaml-cpp.new-api,hovatterz/yaml-cpp.core,dgu123/yaml-cpp,kunaltyagi/yaml-cpp,idispatch/yaml-cpp.new-api,graehl/yaml-cpp.old-api,sravanimantha/yaml-cpp,hovatterz/yaml-cpp.old-api,simonlynen/yaml-cpp.new-api,majintao0131/yaml-cpp.core,idispatch/yaml-cpp.emitter-refactor,certik/yaml-cpp,idispatch/yaml-cpp.new-api,hovatterz/yaml-cpp.core,graehl/yaml-cpp.new-api,jbeder/yaml-cpp.old-api,mrosenbladt/yaml-cpp,hovatterz/yaml-cpp,mrosenbladt/yaml-cpp,graehl/yaml-cpp.old-api,majintao0131/yaml-cpp.new-api,jbeder/yaml-cpp.old-api,idispatch/yaml-cpp.new-api,simonlynen/yaml-cpp.emitter-refactor,dgu123/yaml-cpp,simonlynen/yaml-cpp,graehl/yaml-cpp.new-api,majintao0131/yaml-cpp.core,majintao0131/yaml-cpp.core,mrosenbladt/yaml-cpp.emitter-refactor,liam-middlebrook/yaml-cpp.old-api,simonlynen/yaml-cpp.new-api,kastnermario/yaml-cpp.old-api,liam-middlebrook/yaml-cpp.old-api,liam-middlebrook/yaml-cpp.core,graehl/yaml-cpp.core,hovatterz/yaml-cpp.new-api,mrosenbladt/yaml-cpp,liam-middlebrook/yaml-cpp.core,graehl/yaml-cpp.core,graehl/yaml-cpp.core,certik/yaml-cpp.emitter-refactor,simonlynen/yaml-cpp.core,jbeder/yaml-cpp.emitter-refactor,mrosenbladt/yaml-cpp.old-api,liam-middlebrook/yaml-cpp.core,majintao0131/yaml-cpp,sravanimantha/yaml-cpp.old-api,hovatterz/yaml-cpp.emitter-refactor,dgu123/yaml-cpp,certik/yaml-cpp.old-api,mrosenbladt/yaml-cpp.core,majintao0131/yaml-cpp,kunaltyagi/yaml-cpp,kunaltyagi/yaml-cpp,idispatch/yaml-cpp.old-api,kunaltyagi/yaml-cpp,sravanimantha/yaml-cpp,hovatterz/yaml-cpp,jbeder/yaml-cpp.old-api,liam-middlebrook/yaml-cpp.old-api,hovatterz/yaml-cpp.core,kastnermario/yaml-cpp.core,liam-middlebrook/yaml-cpp.old-api,idispatch/yaml-cpp.core,kastnermario/yaml-cpp.emitter-refactor,simonlynen/yaml-cpp.old-api,sravanimantha/yaml-cpp.core,majintao0131/yaml-cpp.new-api,liam-middlebrook/yaml-cpp.new-api,drawcode/yaml-cpp.core,kastnermario/yaml-cpp.old-api,simonlynen/yaml-cpp,hovatterz/yaml-cpp.new-api,graehl/yaml-cpp.emitter-refactor,mrosenbladt/yaml-cpp.emitter-refactor,mrosenbladt/yaml-cpp.emitter-refactor,sravanimantha/yaml-cpp.core,liam-middlebrook/yaml-cpp,idispatch/yaml-cpp.old-api,jbeder/yaml-cpp.old-api,mrosenbladt/yaml-cpp.core,simonlynen/yaml-cpp.new-api,simonlynen/yaml-cpp.core,drawcode/yaml-cpp.old-api,simonlynen/yaml-cpp.emitter-refactor,graehl/yaml-cpp.old-api,majintao0131/yaml-cpp.old-api,simonlynen/yaml-cpp,kastnermario/yaml-cpp.old-api,drawcode/yaml-cpp,sravanimantha/yaml-cpp.new-api,idispatch/yaml-cpp.new-api,certik/yaml-cpp.old-api,mrosenbladt/yaml-cpp.new-api,majintao0131/yaml-cpp.emitter-refactor,hovatterz/yaml-cpp.emitter-refactor,idispatch/yaml-cpp,mrosenbladt/yaml-cpp.new-api,certik/yaml-cpp,idispatch/yaml-cpp,jbeder/yaml-cpp.core,drawcode/yaml-cpp.new-api,hovatterz/yaml-cpp.old-api,jbeder/yaml-cpp.new-api,drawcode/yaml-cpp.emitter-refactor,kastnermario/yaml-cpp.core,drawcode/yaml-cpp.new-api,hovatterz/yaml-cpp.core,idispatch/yaml-cpp.old-api,kastnermario/yaml-cpp,graehl/yaml-cpp.new-api,idispatch/yaml-cpp,drawcode/yaml-cpp.old-api,kastnermario/yaml-cpp.new-api,sravanimantha/yaml-cpp.old-api,vrum/yaml-cpp,vrum/yaml-cpp,mrosenbladt/yaml-cpp.old-api,liam-middlebrook/yaml-cpp.core,idispatch/yaml-cpp.core,mrosenbladt/yaml-cpp.old-api,kastnermario/yaml-cpp.new-api,sravanimantha/yaml-cpp.core,drawcode/yaml-cpp.emitter-refactor,graehl/yaml-cpp.emitter-refactor,kastnermario/yaml-cpp.new-api,sravanimantha/yaml-cpp,simonlynen/yaml-cpp.new-api,mrosenbladt/yaml-cpp.core,liam-middlebrook/yaml-cpp,simonlynen/yaml-cpp.core,idispatch/yaml-cpp.old-api,certik/yaml-cpp.emitter-refactor,drawcode/yaml-cpp.emitter-refactor,drawcode/yaml-cpp,drawcode/yaml-cpp.new-api,certik/yaml-cpp.core,kastnermario/yaml-cpp.emitter-refactor,mrosenbladt/yaml-cpp.core,kastnermario/yaml-cpp.core,majintao0131/yaml-cpp.emitter-refactor,mrosenbladt/yaml-cpp.new-api,liam-middlebrook/yaml-cpp.new-api,drawcode/yaml-cpp.old-api,majintao0131/yaml-cpp.old-api,drawcode/yaml-cpp.core,liam-middlebrook/yaml-cpp,certik/yaml-cpp.core,kastnermario/yaml-cpp.emitter-refactor,simonlynen/yaml-cpp.emitter-refactor,certik/yaml-cpp.old-api,majintao0131/yaml-cpp.new-api,certik/yaml-cpp.old-api,mrosenbladt/yaml-cpp.old-api,certik/yaml-cpp.new-api,hovatterz/yaml-cpp.old-api,vrum/yaml-cpp,certik/yaml-cpp.core,majintao0131/yaml-cpp,kastnermario/yaml-cpp,simonlynen/yaml-cpp.old-api,majintao0131/yaml-cpp,sravanimantha/yaml-cpp.emitter-refactor,drawcode/yaml-cpp.old-api,hovatterz/yaml-cpp.new-api,certik/yaml-cpp.new-api,certik/yaml-cpp.new-api,certik/yaml-cpp,simonlynen/yaml-cpp.core,idispatch/yaml-cpp.core,liam-middlebrook/yaml-cpp.emitter-refactor,majintao0131/yaml-cpp.emitter-refactor,sravanimantha/yaml-cpp.new-api,liam-middlebrook/yaml-cpp.new-api,drawcode/yaml-cpp,simonlynen/yaml-cpp.old-api,sravanimantha/yaml-cpp.emitter-refactor,sravanimantha/yaml-cpp.new-api,simonlynen/yaml-cpp,idispatch/yaml-cpp.emitter-refactor,jbeder/yaml-cpp.core,jbeder/yaml-cpp.emitter-refactor,idispatch/yaml-cpp.emitter-refactor,sravanimantha/yaml-cpp.emitter-refactor,jbeder/yaml-cpp.core,certik/yaml-cpp,jbeder/yaml-cpp.core,sravanimantha/yaml-cpp.old-api,graehl/yaml-cpp.emitter-refactor,graehl/yaml-cpp.new-api,majintao0131/yaml-cpp.old-api,idispatch/yaml-cpp.core,drawcode/yaml-cpp.core,kastnermario/yaml-cpp.old-api,graehl/yaml-cpp.core,sravanimantha/yaml-cpp,drawcode/yaml-cpp,drawcode/yaml-cpp.new-api,hovatterz/yaml-cpp.emitter-refactor,hovatterz/yaml-cpp,majintao0131/yaml-cpp.new-api,kastnermario/yaml-cpp.new-api,certik/yaml-cpp.emitter-refactor,graehl/yaml-cpp.old-api,majintao0131/yaml-cpp.core,jbeder/yaml-cpp.new-api,jbeder/yaml-cpp.new-api,liam-middlebrook/yaml-cpp.emitter-refactor,drawcode/yaml-cpp.core,hovatterz/yaml-cpp.old-api,idispatch/yaml-cpp,dgu123/yaml-cpp,liam-middlebrook/yaml-cpp,kastnermario/yaml-cpp.core,hovatterz/yaml-cpp.new-api,jbeder/yaml-cpp.new-api,sravanimantha/yaml-cpp.core,hovatterz/yaml-cpp,majintao0131/yaml-cpp.old-api,mrosenbladt/yaml-cpp.new-api,sravanimantha/yaml-cpp.old-api,certik/yaml-cpp.core,kastnermario/yaml-cpp,vrum/yaml-cpp,mrosenbladt/yaml-cpp,simonlynen/yaml-cpp.old-api