In multiRU we will need to be able to check multiple CPRI boards and multiple
SFP ports on them, not only SFP ports on CPRI board 0 that was implicitly used
until now.

-> As a preparatory step the SR to explicitly specify which CPRI resources are being verified.

This patch is necessary because in nexedi/slapos.toolbox!127
we adjust check_cpri_lock plugin to require CPRI device + SFP port to be
explicitly specified.

/cc @tomo, @xavier_thompson, @Daetalus
/reviewed-by @lu.xu, @jhuge
/reviewed-on nexedi/slapos!1461