Allow passing "env.ICINGAWEB_CONFIGDIR" as command attribute in director commands

[ValeDaRold]

Expected Behavior

In commands, there should be the possibility to specify a custom env.ICINGAWEB_CONFIGDIR if not equal to the default one. It would be great to have an attribute for the command for specifying it.

Current Behavior

For now, if you need to launch for example an icingacli command and your system runs with a custom env.ICINGAWEB_CONFIGDIR, you have to duplicate the command and insert the custom variable.

Our use-case

For example we defined some custom commands with the following template:

object CheckCommand "icingacli-businessprocess-custom" {
        import "icingacli-businessprocess"
        env.ICINGAWEB_CONFIGDIR = "/custom_dir/shared/icingaweb2/conf/"
}

We would like simply to launch the default "icingacli" command with a specific parameter

icingacli-businessprocess --config_dir "/custom_dir/shared/icingaweb2/conf/"

[lazyfrosch]

We don't have plans to configure environment values via Director.

The easiest way is to add such variables to Icinga's local environment.

systemctl show icinga2.service | grep EnvironmentFile

Add your environment to either /etc/sysconfig/icinga2 or /etc/default/icinga2. This is also often useful for libraries and other checks.