1.11.0: Adds '--ignore_unavailable_resources' cli option

Features:

• adds new cli option --ignore_unavailable_resources to ignore all 'UNKNOWN' errors which indicate missing resources and report as 'OK' #147

Bugfixes:

• fixes issue ASUS power supplies not reported correctly #154
• fixes issue with Cisco firmware report for Absent physical drives #131
• fixes issue with iDRAC expand string #151
• fixes issue with deprecation warnings for regex syntax for newer python versions #151