trunner: switch to jjfs2 on zynq7000 #2312

Job	Run time
call-ci / build (armv7a7-imx6ull-evk)	1m 31s
call-ci / build (armv7a9-zynq7000-qemu)	2m 2s
call-ci / build (armv7a9-zynq7000-zedboard)	1m 13s
call-ci / build (armv7a9-zynq7000-zturn)	1m 13s
call-ci / build (armv7m4-stm32l4x6-nucleo)	1m 15s
call-ci / build (armv7m7-imxrt106x-evk)	1m 35s
call-ci / build (armv7m7-imxrt117x-evk)	1m 27s
call-ci / build (host-generic-pc)	59s
call-ci / build (ia32-generic-pc)	1m 38s
call-ci / build (ia32-generic-qemu)	1m 22s
call-ci / build (riscv64-generic-qemu)	1m 13s
call-ci / build (riscv64-generic-spike)	1m 4s
call-ci / run tests on emulators (armv7a9-zynq7000-qemu)	23s
call-ci / run tests on emulators (host-generic-pc)	24s
call-ci / run tests on emulators (ia32-generic-qemu)	19s
call-ci / run tests on hardware (armv7m7-imxrt106x-evk)	29s
call-ci / run tests on hardware (armv7m7-imxrt117x-evk)	23s
call-ci / run tests on hardware (armv7a9-zynq7000-zedboard)	41s
call-ci / run tests on hardware (armv7m4-stm32l4x6-nucleo)	1m 40s
call-ci / notify ci team using e-mail	3s
	20m 54s

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