ci: bring DragonFlyBSD and Haiku CI back (#2359) #46

Job	Run time
minver	31s
macos	3m 22s
macos-aarch64	1m 54s
linux_native_builds (x86_64-unknown-linux-gnu)	2m 31s
rust_stable	1m 8s
linux_native_builds (x86_64-unknown-linux-musl)	2m 30s
rustfmt	10s
tier3 (x86_64-unknown-dragonfly)	59s
tier3 (x86_64-unknown-openbsd)	54s
tier3 (x86_64-unknown-haiku)	54s
cross_compiling	0s
cross	0s
redox	0s
	14m 53s

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