This enables the usage of certificates for authentication

Using the 'attrs' list in the payload you can limit the
attributes fetched for the object to list

Raise an exception if the object type does not exist

The function converts an Icinga 2 object type to the name which
is used in the url or raises an exception if the object type does
not exist.

Add parameters "templates" and "attrs". Also add docstring
with examples.

Rename parameter and add docstring with examples.

Add docstring with examples and change variable names for
better reading.

Sometimes "payload" and sometimes "config" was used for the
payload of the request.

The Icinga 2 API doesn't like e.g. https://my-host:5665//v1/objects/hosts

The parameters are necessary to work correctly.

The config file has an ini format with section [api]

…nction

Add objects.get() function to get only one object.

The result was a dictionary with the only key 'results' (for a successful
request). Now return the value of request['results'].

Check if either username/password of certificate is defined.

Rename the function and make it public.

Using the plural "filters" suggests that the type is a list but it is a string.

'filter_vars' allows you to use dictionary keys as variables in filter expressions
which then gets replaced with its value.