Add missing slack token and slack channel options for dbx listener
Add missing slack token and slack channel options for dbx listener

cobbr/ObfuscatedEmpire,adaptivethreat/Empire,adaptivethreat/Empire,bneg/Empire,ThePirateWhoSmellsOfSunflowers/Empire,bneg/Empire,adaptivethreat/Empire,cobbr/ObfuscatedEmpire,bneg/Empire,PowerShellEmpire/Empire,wisdark/Empire,wisdark/Empire,EmpireProject/Empire,byt3bl33d3r/Empire,wisdark/Empire,bneg/Empire,PowerShellEmpire/Empire,EmpireProject/Empire,wisdark/Empire,bneg/Empire,cobbr/ObfuscatedEmpire,ThePirateWhoSmellsOfSunflowers/Empire,byt3bl33d3r/Empire,echodaemon/Empire,ThePirateWhoSmellsOfSunflowers/Empire,EmpireProject/Empire,EmpireProject/Empire,byt3bl33d3r/Empire,echodaemon/Empire,ThePirateWhoSmellsOfSunflowers/Empire,byt3bl33d3r/Empire,cobbr/ObfuscatedEmpire,byt3bl33d3r/Empire,wisdark/Empire,cobbr/ObfuscatedEmpire,PowerShellEmpire/Empire,echodaemon/Empire,ThePirateWhoSmellsOfSunflowers/Empire,EmpireProject/Empire,EmpireProject/Empire