Improvement:
	1.Add request error status

Signed-off-by: Jinsong Li <jsli@marvell.com>
Improvement:
	1. upgrade API to v2.0
	2. change result data-format
	3. disable cache because the new data-format. Cache will be change
		to redis in the feature.
	4. compatible with API v1.0

Signed-off-by: Jinsong Li <jsli@marvell.com>
Improvement:
	change maintainance result

Signed-off-by: Jinsong Li <jsli@marvell.com>