Remove the nss3 path prefix from the cert.h C preprocessor source file inclusion
    
    Bug Description:
    The NSS header cert.h resides in different paths on different operating
    systems. Hardcoding a path prefix as #include <nss3/cert.h> caused
    fatal compile-time errors on some operating systems, such as Debian,
    because the C preprocessor could not find the header.
    
    Fix Description:
    Removing the 'nss3' path prefix allows compilation to succeed, as
    the compiler can locate cert.h in the NSS include path detected
    by pkg-config.
    
    Changes to rpm/389-ds-base.spec.in included at the request of
    Matus Honek in https://pagure.io/389-ds-base/pull-request/50352
    
    Author: Hugh McMaster <hugh.mcmaster@outlook.com>
    
    Reviewed by: firstyear, mhonek, mreynolds
    
    Remove NSS header and library path hacks from the rpm package spec file
    
    Patch suggested by Matus Honek in https://pagure.io/389-ds-base/pull-request/50352