shell: output: rename struct members to avoid reserved word #3251

Job	Run time
python linting	30s
validate commits	0s
Generate build matrix	6s
spelling	11s
bookworm - test-install	12m 13s
bookworm - 32 bit	12m 51s
noble - test-install	12m 39s
el9 - test-install	12m 19s
alpine - test-install	2m 18s
fedora40 - test-install	12m 23s
jammy - test-install	11m 39s
focal - py3.8	16m 57s
bookworm - gcc-12,content-s3,distcheck	19m 52s
fedora40 - clang-18	16m 31s
coverage	23m 55s
el8 - ascii	19m 9s
el8 - test-install	13m 20s
el8 - system,coverage	5m 28s
inception	21m 36s
flux-pmix check	13m 47s
flux-accounting check	4m 48s
flux-pam check	4m 14s
macos build only	3m 46s
flux-sched check	6m 53s
Generate docker manifest	0s
	4h 7m 25s

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