Trim ANSI codes from syslog

[dargor]

Using --syslog-server=unix:// I get :

Jun  2 09:49:00 ssh2docker ./ssh2docker[xxx]: #033[33mWARN#033[0m[0006] config.Allowed = false

Jun  2 09:49:01 ssh2docker ./ssh2docker[xxx]: #033[34mINFO#033[0m[0007] Accepted publickey for xxx from xxx port xxx ssh2:

Jun  2 09:52:14 ssh2docker ./ssh2docker[xxx]: #033[34mINFO#033[0m[0200] Received disconnect from xxx:xxx: disconnected by user



Using --syslog-server=udp://127.0.0.1:514 I get : 

<6>2016-06-02T10:22:36Z ssh2docker ./ssh2docker[xxx]: <1b>[34mINFO<1b>[0m[0000] Listening on ":xxx"                           

<4>2016-06-02T10:22:41Z ssh2docker ./ssh2docker[xxx]: <1b>[33mWARN<1b>[0m[0005] config.Allowed = false                       

<6>2016-06-02T10:22:43Z ssh2docker ./ssh2docker[xxx]: <1b>[34mINFO<1b>[0m[0006] Accepted publickey for xxx from xxx port xxx ssh2:  

<6>2016-06-02T10:23:08Z ssh2docker ./ssh2docker[xxx]: <1b>[34mINFO<1b>[0m[0031] Received disconnect from xxx:xxx: disconnected by user