fix(unt): resolve start parameter issues #2681 (#3733)

* Update linuxgsm.sh

* Update _default.cfg

* Update install_config.sh

* Update _default.cfg

* Revert "Update linuxgsm.sh"

This reverts commit 12639d26d1935f09c0ebd4de79d70dd9ce75d4b8.

* Revert "Update install_config.sh"

This reverts commit 2de6088edddc1fc7e0d934439395bd6d57dfa441.

lgsm/config-default/config-lgsm/untserver/_default.cfg

@@ -12,10 +12,15 @@
 ip="0.0.0.0"
 port="27015"
 maxplayers="20"
-defaultmap="pei"
+defaultmap="PEI"
+
+## Game Server Login Token (GSLT): Required
+# GSLT is required for running a public server.
+# More info: https://docs.linuxgsm.com/steamcmd/gslt
+gslt=""
 
 ## Server Parameters | https://docs.linuxgsm.com/configuration/start-parameters#additional-parameters
-startparameters="-port:${port} -players:${maxplayers} --nographics -${defaultmap} -batchmode +secureserver/${selfname}"
+startparameters="-nographics -batchmode -bind ${ip} -port ${port} -maxplayers ${maxplayers} -map ${defaultmap} -gslt ${gslt} +InternetServer/${selfname}"
 
 #### LinuxGSM Settings ####