Cherry pick PR #2730: [XB] Use different size of output pool for different targets #1634

Job	Run time
stub / initialize	37s
stub / docker-build-image	28s
stub / docker-unittest-image	0s
stub / stub_devel	5m 29s
stub / stub_debug	6m 6s
stub / stub_qa	4m 56s
stub / stub_gold	4m 41s
stub / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
stub / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
stub / on-host-unit-test-report	0s
	22m 17s

Provide feedback