added the possibility to load multiple INI files

[thorsten-klein]

• added the possibility to load multiple INI files from the folder /etc/commonapi-dbus.d or the folder provided by the environment variable COMMONAPI_DBUS_CONFIG (if it is a folder).

Priority is as follows:

1. folder definded by COMMONAPI_DBUS_CONFIG
2. file in the current folder
3. file definded by COMMONAPI_DBUS_CONFIG
4. folder /etc/commonapi-dbus.d
5. file /etc/commonapi-dbus.ini

• added the capability to use ; for comments

[goncaloalmeida]

@thorsten-klein please provide some examples/proof of these changes working.

[goncaloalmeida]

already requested for examples..

[thorsten-klein]

Are there already some tests existing for the current commonapi-dbus.ini? Then I can add some tests for my change analog to existing tests.

[goncaloalmeida]

@thorsten-klein you can add here: https://github.com/COVESA/capicxx-dbus-runtime/tree/master/src/test :)

[thorsten-klein]

But are there already some specific tests for the current ini config file loading?

[goncaloalmeida]

@thorsten-klein I suppose not.
But we are not using this internally (multiple ini files) so we need proof that this is working :)

[thorsten-klein]

Yes I fully understand. If it does not break your setup, then it could actually be merged 😎
If it is too risky for you, then we need your support in order to create a test for this.

It is very hard for me to create a test for this extended feature, if there is no test at all for the current (simple) commonapi-dbus.ini loading. This would mean I have to work out a test concept how to test these config files. So would be nice if you create a test for the simple commonapi-dbus.ini loading, so I can set up on top of your work.