AWS : allow 'osdu_api.ini' file path configuration
For now, it seems that it is not possible to modify the default file path of the osdu_api.ini file when using AWS. As it is required for the AWS configuration, I suggest a modification of this line : https://community.opengroup.org/osdu/platform/system/sdks/common-python-sdk/-/blob/master/osdu_api/providers/aws/service_principal_util.py#L63
The modification could be :
config_file_name = os.environ.get("OSDU_API_CONFIG_INI") or "osdu_api.ini"
Thus, it will use the "OSDU_API_CONFIG_INI" environment variable as in DefaultConfigManager class (see. https://community.opengroup.org/osdu/platform/system/sdks/common-python-sdk/-/blob/master/osdu_api/configuration/config_manager.py#L73)
This modification should not break any actual configuration, except if a configuration use 2 differents osdu_api.ini files, one used for DefaultConfiguration class and one for the AWS configuration (which seems not to be a good practice I think ?).