UTIL: Function 2string for enum sss_cli_command
Improvement of debug messages.
Instead of:"(0x0400): Running command [17]..."
We could see:"(0x0400): Running command [17][SSS_NSS_GETPWNAM]..."
(It's not used in sss_client. There are only hex numbers of commands.)
Resolves:
https://fedorahosted.org/sssd/ticket/2708
Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>