[SSSD] [sssd PR#677][comment] pcre: port to pcre2

[thalman]

URL: https://github.com/SSSD/sssd/pull/677
Title: #677: pcre: port to pcre2

thalman commented:
"""
> One more question (and maybe I already asked it in the months before :-)) but did you consider preferring pcre2? Or would you prefer to do it in a separate patch?

Separate patch definitely, I have it ready (I needed it for testing)   
"""

See the full comment at https://github.com/SSSD/sssd/pull/677#issuecomment-508024744