Tests

Support transient /etc #1860

Job	Run time
build-integration	6m 45s
Build - FCOS minimal	1m 59s
Code style	45s
Build (C9S)	2m 21s
Build (Fedora)	1m 42s
Debian Stable with sign-ed25519 and FUSE 2	8m 50s
Debian Stable with curl, sign-ed25519, no gpgme, FUSE 3	8m 4s
Debian Stable 32 bit	11m 20s
Debian Stable without libsystemd	8m 24s
Debian Testing	10m 35s
Debian Testing with libsoup3	8m 4s
Debian stable + static-prepareroot	8m 22s
Ubuntu Latest Release	10m 40s
Privileged testing	49s
	1h 28m 40s

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