Add --property to image list
Refs: #4220
Also, fix various bugs introduced by utils re-writtings
Test ArgumentParseManager.parse
Test ArgumentParseManager.update_arguments
Refs: #4058
Missing test: ArgumentParseManager.parse
Fix intetation mistake
Allow non-None empty default values in Args
Test ArgumentParseManager upto update_parser
Test ProgressBarArgument
Fix typo in error docs
Test Version and KeyValue Arguments
Recover default fallback for Int/DateArguments
Test DateArgument
Test IntArgument
Test FlagArgument and ValueArgument
Fully test RuntimeConfigArgument
Initialize RuntimeConfigArgument unittests
Mock calls to kamaki.cli.config.Config methods
Complete ConfigArgument testing
Fully test argument.Argument
Initialize unittests for argument.Argument
Also, make argument package a directory