EX-3889 lipe: lamigo/lpurge error reporting

EX-3889 lipe: lamigo/lpurge error reporting

Replace LAMIGO_{FATAL,ERROR,WARN,INFO,DEBUG}()
by macros with more general name
LX_{FATAL,ERROR,WARN,INFO,DEBUG}()
and use them for both lamigo and lpurge.
Since now lipe will not use llapi_printf(),
but only LX_{FATAL,ERROR,WARN,INFO,DEBUG}() and
llapi_error()

Test-Parameters: trivial testlist=hot-pools
Signed-off-by: Alexandre Ioffe <aioffe@ddn.com>
Change-Id: I4516bb737ec8a308b6e39be2767fd5e03e8b3c61
Reviewed-on: https://review.whamcloud.com/45131
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: John L. Hammond <jhammond@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/46096