test: add root+outDir . and ./ tests #2466

Job	Run time
matrix-prep	4s
bats-tests (7, 7.4.1)	5m 43s
test (7, 7.4.1, 0, ubuntu, e2e/external_dep)	35s
test (7, 7.4.1, 0, ubuntu, e2e/external_dep/app)	28s
test (8, 8.3.1, 1, ubuntu, .)	7m 20s
test (8, 8.3.1, 1, ubuntu, e2e/smoke)	26s
test (7, 7.4.1, 0, ubuntu, e2e/smoke)	28s
test (8, 8.3.1, 1, ubuntu, e2e/bzlmodules)	26s
test (8, 8.3.1, 1, ubuntu, e2e/worker)	50s
test (6, 6.5.0, 1, ubuntu, e2e/external_dep)	37s
test (6, 6.5.0, 1, ubuntu, e2e/bzlmodules)	24s
test (7, 7.4.1, 0, ubuntu, e2e/worker)	45s
test (6, 6.5.0, 1, ubuntu, e2e/external_dep/app)	26s
test (6, 6.5.0, 1, ubuntu, e2e/worker)	44s
test (7, 7.3.2, 1, docs, ubuntu)	37s
conclusion	3s
	19m 56s

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