Backport the Fedora-based nettest image to 0.18 #925

Job	Run time
Clean up generated files	1m 54s
Images	2m 53s
Clusters	1m 31s
Build multi-arch images	3m 57s
Compilation	47s
Clean up clusters	2m 1s
E2E	3m 6s
Deployment (operator)	3m 4s
Multiple gateways support	1m 35s
Post mortem	2m 25s
Deployment (helm)	2m 13s
Unit tests	1m 39s
Deployment (globalnet, operator)	3m 16s
Deployment (globalnet, helm)	2m 24s
Deployment (air-gap)	3m 0s
Deployment (air-gap, globalnet)	3m 25s
Deployment (air-gap, lighthouse)	3m 6s
Deployment (air-gap, ovn)	6m 57s
Deployment (dual-stack)	3m 19s
Deployment (ovn)	6m 49s
Deployment (ovn-ic)	6m 46s
Deployment (operator, lighthouse)	3m 47s
Deployment (helm, lighthouse)	2m 32s
Deployment (load-balancer)	3m 20s
Deployment (prometheus)	2m 43s
	1h 18m 29s

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