chore: prepare release v1.5.0-alpha.2 #163

Job	Run time
Set Version from git ref	1s
Binaries	6m 26s
Demo Docker Images (bookbuyer)	2m 19s
Demo Docker Images (bookthief)	2m 28s
Demo Docker Images (bookstore)	2m 18s
Docker Images (curl)	1m 40s
Demo Docker Images (bookwarehouse)	2m 21s
Docker Images (sidecar-init)	1m 47s
Demo Docker Images (tcp-echo-server)	1m 44s
Docker Images (controller)	5m 25s
Demo Docker Images (tcp-client)	1m 45s
Docker Images (injector)	4m 30s
Docker Images (connector)	4m 33s
Docker Images (crds)	2m 8s
Docker Images (bootstrap)	4m 40s
Docker Images (preinstall)	3m 35s
Docker Images (healthcheck)	3m 29s
Docker Images (xnetmgmt)	4m 41s
Docker Images (ingress)	5m 10s
Docker Images (gateway)	4m 50s
	1h 5m 50s

Provide feedback