'Initialize command line bindings.
Args:
builder: [citest.base.ConfigBindingsBuilder]
defaults: [dict] Default binding value overrides.
This is used to initialize the default commandline parameters.'

@classmethod
def init_bindings_builder(cls, builder, defaults=None):

    defaults = (defaults or {})
    for klas in PLATFORM_SUPPORT_CLASSES:
        klas.add_commandline_parameters(cls, builder, defaults)
    cls._init_spinnaker_bindings_builder(builder, defaults=defaults)
    super(SpinnakerTestScenario, cls).init_bindings_builder(builder, defaults=defaults)
