Establish API username and password associated with APIv2 commands.

def SetCredentials(api_username,api_passwd):
	"""Establish API username and password associated with APIv2 commands."""
	global V2_API_USERNAME
	global V2_API_PASSWD
	global _V2_ENABLED
	_V2_ENABLED = True
	V2_API_USERNAME = api_username
	V2_API_PASSWD = api_passwd