Tests

sign: Support x509 signature type #2342

Job	Run time
Build (Fedora)	1m 16s
build-integration	4m 3s
clang-format	13s
Code style	38s
Build - FCOS minimal	1m 39s
Debian Stable with sign-ed25519 and FUSE 2	8m 0s
Debian Stable with curl, sign-ed25519, no gpgme, FUSE 3	7m 22s
Debian Stable 32 bit	4m 19s
Debian Stable without libsystemd	3m 52s
Debian Testing	7m 47s
Debian Testing with libsoup3	3m 51s
Debian stable + static-prepareroot	3m 52s
Ubuntu Latest Release	4m 18s
Privileged testing	44s
	51m 54s

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