the RAUC server

image	version	ECP full update	ECP diff update	ECP diff zip	ECP image	OTA image	OTA rescue image	OTA update image rescue
2.2.25	4.2.5
2.2.26	4.2.6
2.2.27	4.2.7
2.2.28	4.2.8
2.3.18	4.3.0
2.3.20	4.3.2
2.4.12	4.4.0-beta.2
2.4.15	4.4.0-rc.3
2.4.16	4.4.0-rc.4
2.4.17	4.4.0
2.4.18-hf.1	4.4.1-hf.1
2.4.19	4.4.1
2.4.20	4.4.2
2.5.15	4.5.0-beta.1
2.5.16	4.5.0-beta.2
2.5.17	4.5.0-beta.2
2.5.18	4.5.0-beta.3