allow signd to write to socket
addressing:
type=AVC msg=audit(1547164874.012:458): avc: denied { getattr } for pid=30329 comm="gpg2" path="/var/lib/copr-keygen/gnupg/S.gpg-agent" dev="vda1" ino=401000 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_var_lib_t:s0 tclass=sock_file permissive=1
type=AVC msg=audit(1547164874.013:459): avc: denied { write } for pid=30329 comm="gpg2" name="S.gpg-agent" dev="vda1" ino=401000 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_var_lib_t:s0 tclass=sock_file permissive=1
type=AVC msg=audit(1547164874.014:460): avc: denied { unlink } for pid=30331 comm="gpg-agent" name="S.gpg-agent" dev="vda1" ino=401000 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_var_lib_t:s0 tclass=sock_file permissive=1
type=AVC msg=audit(1547164874.015:461): avc: denied { create } for pid=30331 comm="gpg-agent" name="S.gpg-agent" scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_var_lib_t:s0 tclass=sock_file permissive=1
type=AVC msg=audit(1547164874.015:462): avc: denied { setattr } for pid=30331 comm="gpg-agent" name="S.gpg-agent" dev="vda1" ino=401000 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_var_lib_t:s0 tclass=sock_file permissive=1