MT#61856 main: prevent duplicated usage of `F` shortcut

Already used by `--no-fallback`, so the rest just probably
inherited the same letter when doing copy-paste.

That is ambiguous and may cause option parsing conflicts.
Keep `F` only for the historical(most important) option
and set the rest to 0.

Change-Id: I6e4841f6e6614bfdfcf53d159130d6d676073d47
(cherry picked from commit b659b2371f)

daemon/main.c

@@ -614,7 +614,7 @@ static void options(int *argc, char ***argv) {
 		{ "priority",	0, 0,	G_OPTION_ARG_INT,	&rtpe_config.priority,	"Thread scheduling priority",	"INT" },
 		{ "idle-scheduling",0, 0,G_OPTION_ARG_STRING,	&rtpe_config.idle_scheduling,"Idle thread scheduling policy",	"default|none|fifo|rr|other|batch|idle" },
 		{ "idle-priority",0, 0,	G_OPTION_ARG_INT,	&rtpe_config.idle_priority,"Idle thread scheduling priority",	"INT" },
-		{ "log-srtp-keys",'F', 0, G_OPTION_ARG_NONE,	&rtpe_config.log_keys,	"Log SRTP keys to error log", NULL },
+		{ "log-srtp-keys",0, 0, G_OPTION_ARG_NONE,	&rtpe_config.log_keys,	"Log SRTP keys to error log", NULL },
 		{ "mysql-host",	0,   0,	G_OPTION_ARG_STRING,	&rtpe_config.mysql_host,"MySQL host for stored media files","HOST|IP"	},
 		{ "mysql-port",	0,   0,	G_OPTION_ARG_INT,	&rtpe_config.mysql_port,"MySQL port"				,"INT"		},
 		{ "mysql-user",	0,   0,	G_OPTION_ARG_STRING,	&rtpe_config.mysql_user,"MySQL connection credentials",		"USERNAME"	},