cord_ep: replace gcoap_req_send2()
cord_ep: replace gcoap_req_send2()

basilfx/RIOT,aeneby/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,smlng/RIOT,OTAkeys/RIOT,jasonatran/RIOT,toonst/RIOT,aeneby/RIOT,basilfx/RIOT,smlng/RIOT,ant9000/RIOT,toonst/RIOT,yogo1212/RIOT,mtausig/RIOT,OTAkeys/RIOT,miri64/RIOT,OlegHahm/RIOT,josephnoir/RIOT,ant9000/RIOT,RIOT-OS/RIOT,rfuentess/RIOT,OlegHahm/RIOT,authmillenon/RIOT,smlng/RIOT,cladmi/RIOT,miri64/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,cladmi/RIOT,rfuentess/RIOT,OTAkeys/RIOT,ant9000/RIOT,cladmi/RIOT,josephnoir/RIOT,jasonatran/RIOT,OlegHahm/RIOT,miri64/RIOT,rfuentess/RIOT,yogo1212/RIOT,josephnoir/RIOT,RIOT-OS/RIOT,x3ro/RIOT,aeneby/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,basilfx/RIOT,miri64/RIOT,x3ro/RIOT,rfuentess/RIOT,miri64/RIOT,mtausig/RIOT,OTAkeys/RIOT,x3ro/RIOT,rfuentess/RIOT,josephnoir/RIOT,x3ro/RIOT,mtausig/RIOT,authmillenon/RIOT,authmillenon/RIOT,OlegHahm/RIOT,x3ro/RIOT,yogo1212/RIOT,smlng/RIOT,OTAkeys/RIOT,kYc0o/RIOT,cladmi/RIOT,kaspar030/RIOT,kaspar030/RIOT,kYc0o/RIOT,authmillenon/RIOT,yogo1212/RIOT,toonst/RIOT,kYc0o/RIOT,toonst/RIOT,kaspar030/RIOT,jasonatran/RIOT,yogo1212/RIOT,ant9000/RIOT,aeneby/RIOT,ant9000/RIOT,smlng/RIOT,authmillenon/RIOT,basilfx/RIOT,kaspar030/RIOT,mtausig/RIOT,authmillenon/RIOT,josephnoir/RIOT,kaspar030/RIOT,basilfx/RIOT,jasonatran/RIOT,cladmi/RIOT,OlegHahm/RIOT,aeneby/RIOT,toonst/RIOT,mtausig/RIOT