promise/plugin/check_cpri_lock: Fix it to work with Amarisoft 2024-06-15

In that release rf_info started to emit output with "Clock tune:" entry
not indented and so our code was ignoring every line after that leading
to missing to load CPR_option entry and erroring with "no CPRI entry" as
the result.

-> Fix that by adding a quirk to treat "Clock tune:" line specially so
   that processing of per sdr/port records does not stop on it.

/cc @lu.xu
/proposed-for-review-on !135