Cleans created users on purging.

debian/jitsi-meet-prosody.postrm

             rm -f /etc/prosody/conf.avail/$JVB_HOSTNAME.cfg.lua
             rm -f /etc/prosody/conf.d/$JVB_HOSTNAME.cfg.lua
 
+            JICOFO_AUTH_DOMAIN="auth.$JVB_HOSTNAME"
             # clean up generated certificates
             rm -f /etc/prosody/certs/$JVB_HOSTNAME.crt
             rm -f /etc/prosody/certs/$JVB_HOSTNAME.key
-            rm -f /etc/prosody/certs/auth.$JVB_HOSTNAME.crt
-            rm -f /etc/prosody/certs/auth.$JVB_HOSTNAME.key
-            rm -rf /var/lib/prosody/auth.$JVB_HOSTNAME.*
+            rm -f /etc/prosody/certs/$JICOFO_AUTH_DOMAIN.crt
+            rm -f /etc/prosody/certs/$JICOFO_AUTH_DOMAIN.key
+            rm -rf /var/lib/prosody/$JICOFO_AUTH_DOMAIN.*
             rm -rf /var/lib/prosody/$JVB_HOSTNAME.*
+
+            # clean created users
+            rm -rf /var/lib/prosody/`echo $JICOFO_AUTH_DOMAIN | sed -e "s/\./%2e/g"`
         fi
 
         # Clear the debconf variable