fix: wait for cloud-init.service to fully activate #3433

Job	Run time
Check secrets / Check secret	1s
Packaging (xenial)	5m 4s
Packaging (bionic)	3m 49s
Packaging (focal)	4m 48s
Packaging (jammy)	3m 20s
Packaging (mantic)	3m 31s
Integration (bionic, lxd-container, ubuntu-22.04)	1h 7m 5s
Integration (focal, lxd-container, ubuntu-22.04)	1h 20m 40s
Integration (jammy, lxd-container, ubuntu-22.04)	1h 11m 1s
Integration (mantic, lxd-container, ubuntu-22.04)	36m 36s
Integration (xenial, lxd-container, ubuntu-20.04)	1h 15m 37s
Integration (bionic, aws.pro, ubuntu-22.04)	41m 50s
Integration (bionic, gcp.pro, ubuntu-22.04)	48m 57s
Integration (bionic, aws.pro-fips, ubuntu-22.04)	15m 31s
	7h 37m 50s

Provide feedback