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

[jhrozek]

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

jhrozek commented:
"""
btw about testing: I cheated a little because removing pcre on Fedora removes also glib-devel. So I just removed one of the .pc files from pcre-devel and then configured sssd using --with-unicode-lib=libunistring.
"""

See the full comment at https://github.com/SSSD/sssd/pull/677#issuecomment-507798111