config: simplify loading step for client (trivial) #4067

Job	Run time
linux-binary-release (i386, i386)	6m 8s
linux-binary-release (amd64, amd64)	6m 17s
linux-binary-release (armhf, armhf)	6m 34s
linux-binary-release (armel, armel)	6m 56s
linux-binary-release (arm64, aarch64)	7m 5s
linux-binary-release (mipsel, mipsel)	6m 19s
linux-binary-release (mips64el, mips64el)	7m 3s
linux-binary-release (loongarch64, loongarch64)	6m 30s
linux-binary-release (riscv64, riscv64)	6m 39s
linux-binary-release (riscv32, riscv32)	6m 27s
	1h 5m 58s

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