Change loading of OVAL result reports

[Honny1]

This PR changes the approach of loading the OVAL results report and brings special logic to determine where is present the OVAL result report with the OVAL definitions that are used in the CPE dictionary and CPE AL.

The OVAL result report element is selected according to the references in the rule results. The selected element is the one that is not referenced in the rule results. If multiple report elements are not referenced in the rule result, OVAL definitions for CPE are selected from all report elements. In the case of duplicate definitions, the first definition or the definition that has a result other than not evaluated is chosen.

[Honny1]

Changes:

• Consistently split strings
• Reworked _get_oval_check_href method
• Renamed _get_oval_definition_reference method to _get_oval_definition_references
• The _get_applicable_cpe_ids_for_machine method has been moved to ProfileInfo
• Renamed _get_applicable_cpe_ids_for_machine method to get_list_of_cpe_platforms_that_satisfy_evaluation_target