qa/069 - add diags for failure cases
qa/069 - add diags for failure cases

For --- attempt N --- lines, show from which remote host the command
that failed was run (the problem is sometimes there, not here).

wuliming/pcp,edwardt/pcp,tjanez/pcp,tjanez/pcp,prasincs/pcp,edwardt/pcp,wuliming/pcp,adfernandes/pcp,adfernandes/pcp,wuliming/pcp,andyvand/cygpcpfans,andyvand/cygpcpfans,mbaldessari/pcp,adfernandes/pcp,tjanez/pcp,adfernandes/pcp,adfernandes/pcp,mbaldessari/pcp,aeg-aeg/pcpfans,edwardt/pcp,edwardt/pcp,aeg-aeg/pcpfans,prasincs/pcp,andyvand/cygpcpfans,wuliming/pcp,aeg-aeg/pcpfans,mbaldessari/pcp,tjanez/pcp,andyvand/cygpcpfans,wuliming/pcp,wuliming/pcp,adfernandes/pcp,edwardt/pcp,tjanez/pcp,adfernandes/pcp,edwardt/pcp,prasincs/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,aeg-aeg/pcpfans,wuliming/pcp,mbaldessari/pcp,wuliming/pcp,prasincs/pcp,tjanez/pcp,aeg-aeg/pcpfans,adfernandes/pcp,prasincs/pcp,edwardt/pcp,andyvand/cygpcpfans,tjanez/pcp,edwardt/pcp,tjanez/pcp,aeg-aeg/pcpfans,mbaldessari/pcp,prasincs/pcp,prasincs/pcp,mbaldessari/pcp,prasincs/pcp,andyvand/cygpcpfans,aeg-aeg/pcpfans,andyvand/cygpcpfans