dnsdist: Add UCI integration, better defaults #21219

Job	Run time
Feeds Package Test Build / Test aarch64_generic	58m 26s
Feeds Package Test Build / Test arm_cortex-a15_neon-vfpv4	57m 37s
Feeds Package Test Build / Test arm_cortex-a9_vfpv3-d16	57m 2s
Feeds Package Test Build / Test i386_pentium-mmx	57m 11s
Feeds Package Test Build / Test mips_24kc	54m 37s
Feeds Package Test Build / Test mipsel_24kc	1m 33s
Feeds Package Test Build / Test powerpc_464fp	57m 32s
Feeds Package Test Build / Test powerpc_8548	57m 49s
Feeds Package Test Build / Test riscv64_riscv64	3m 19s
Feeds Package Test Build / Test x86_64	56m 28s
	7h 41m 34s

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