### Description Hello,

When I try to reload ruby scripts with (in linux CLI) : `kamcmd app_ruby.reload`

This message is returned: `error: 500 - command app_ruby.reload not found`

I double checked the command name, module status, and debug logs. I can run other kamcmd commands and can use ruby scripts. ### Troubleshooting

#### Reproduction in linux CLI: `yum install kamailio-ruby`

in kamailio.cfg `loadmodule "app_ruby.so"` `modparam("app_ruby", "load", "/etc/kamailio/ruby/myscript.rb")`

in linux CLI: `kamcmd app_ruby.reload`

#### Log Messages

When I execute kamcmd, these debug lines appear: ``` Dec 13 14:57:30 servername /usr/sbin/kamailio[4479]: DEBUG: ctl [../../core/io_wait.h:380]: io_watch_add(): DBG: io_watch_add(0x7fc7ee451320, 19, 3, 0x2b70310), fd_no=1 Dec 13 14:57:30 servername /usr/sbin/kamailio[4479]: DEBUG: ctl [io_listener.c:442]: handle_new_connect(): handle_stream read: new connection (1) on /var/run/kamailio//kamailio_ctl Dec 13 14:57:30 servername /usr/sbin/kamailio[4479]: DEBUG: ctl [io_listener.c:495]: handle_stream_read(): handle_stream read: eof on /var/run/kamailio//kamailio_ctl Dec 13 14:57:30 servername /usr/sbin/kamailio[4479]: DEBUG: ctl [../../core/io_wait.h:602]: io_watch_del(): DBG: io_watch_del (0x7fc7ee451320, 19, -1, 0x10) fd_no=2 called ```

### Possible Solutions I tried to read kamcmd and app_ruby source code but quickly got lost, so no leads there :)

Tried other combinations to no avail: `kamcmd ruby.reload` `kamcmd app_ruby_jsdt.reload`

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` version: kamailio 5.2.0 (x86_64/linux) 535e13 flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: 535e13 compiled on 10:26:34 Nov 28 2018 with gcc 4.8.5 ```

* **Operating System**: Centos 7.2 64bit

``` Linux servername 3.10.0-327.28.2.el7.x86_64 #1 SMP Wed Aug 3 11:11:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux ```