tm2

fix: txtar tests load full config and execute serially #1408

Job	Run time
build (1.20.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	6s
build (1.20.x, amd64, linux, ./pkg/amino/cmd/goscan)	9s
build (1.20.x, amd64, linux, ./pkg/autofile/cmd)	7s
test (1.20.x, _test.flappy)	26s
build (1.20.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	16s
test (1.20.x, _test.pkg.amino)	3m 55s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	11s
test (1.20.x, _test.pkg.bft)	21m 14s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/goscan)	14s
test (1.20.x, _test.pkg.others)	3m 48s
build (1.21.x, amd64, linux, ./pkg/autofile/cmd)	13s
test (1.21.x, _test.flappy)	41s
build (1.21.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	6s
test (1.21.x, _test.pkg.amino)	3m 36s
test (1.21.x, _test.pkg.bft)	21m 14s
test (1.21.x, _test.pkg.others)	6m 40s
upload-coverage	0s
	1h 2m 56s

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