New variables

Variable	Description
variable1 `port` `basic` `mandatory`	A port variable. Validators: • well-known ports (1 to 1023) are allowed • registred ports (1024 to 49151) are allowed • private ports (greater than 49152) are allowed
variable2 `port` `standard` `mandatory`	A port variable with default value. Validators: • well-known ports (1 to 1023) are allowed • registred ports (1024 to 49151) are allowed • private ports (greater than 49152) are allowed Default: 8080
variable3 `port` `standard` `mandatory`	A port variable with integer default value. Validators: • well-known ports (1 to 1023) are allowed • registred ports (1024 to 49151) are allowed • private ports (greater than 49152) are allowed Default: 8080