Add a Pex PEX scie for armv7l. (#2624) #3276

Job	Run time
Check GitHub Organization	1s
tox -e format-check,lint-check,typecheck,enum-check,vendor-check,package,docs	11m 9s
./dtox.sh -e py27-pip20	9m 35s
tox -e py313-pip24_3_1	18m 31s
./dtox.sh -e py38-pip22_3_1	18m 30s
tox -e py313-pip24_3_1-integration --shard 1/2	35m 51s
./dtox.sh -e py311-pip23_3_2	18m 38s
tox -e py313-pip24_3_1-integration --shard 2/2	44m 46s
./dtox.sh -e py313-pip24_3_1	14m 42s
./dtox.sh -e py314-pip24_3_1	14m 38s
./dtox.sh -e pypy310-pip24_3_1	27m 17s
./dtox.sh -e py27-pip20-integration	28m 57s
./dtox.sh -e py38-pip22_3_1-integration --shard 1/2	30m 23s
./dtox.sh -e py38-pip22_3_1-integration --shard 2/2	28m 26s
./dtox.sh -e py311-pip23_3_2-integration --shard 1/2	30m 3s
./dtox.sh -e py311-pip23_3_2-integration --shard 2/2	30m 14s
./dtox.sh -e py313-pip24_3_1-integration --shard 1/2	28m 20s
./dtox.sh -e py313-pip24_3_1-integration --shard 2/2	27m 11s
./dtox.sh -e py314-pip24_3_1-integration --shard 1/2	28m 36s
./dtox.sh -e py314-pip24_3_1-integration --shard 2/2	26m 17s
./dtox.sh -e pypy310-pip24_3_1-integration --shard 1/2	47m 42s
./dtox.sh -e pypy310-pip24_3_1-integration --shard 2/2	48m 28s
Gather Final Status	1s
	9h 28m 16s

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