fix: parallelize the single-thread checkGeometry

With ccache on the juggler and eicrecon builds, we now spend most of the time (in aarch64 builds) waiting for the checkGeometry calls to complete. This parallelizes them. Takes the duration of jug_xl builds from 45 minutes to 8 minutes.

• Checked that artifacts still show up in fieldmaps and calibrations directories

assigned to @wdconinc

added 3 commits

• 4abf87ab...c5d0c847 - 2 commits from branch master
• f46bf618 - fix: parallelize the single-thread checkGeometry

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added 1 commit

• 97098727 - fix: shell=True on subprocess.calll, not join

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added 1 commit

• f2fbb2fd - fix: check=True on most, except for bg procs where sys.exit(1) when $? != 0

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added 1 commit

• a13fc836 - fix: check_call

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enabled an automatic merge when the pipeline for a13fc836 succeeds

merged