PYTHON-4815 Migrate test_discovery_and_monitoring.py to async #966

Job	Run time
Make SDist	36s
Build wheels for manylinux_x86_64	2m 17s
Build wheels for manylinux_aarch64	10m 6s
Build wheels for manylinux_ppc64le	9m 58s
Build wheels for manylinux_s390x	10m 5s
Build wheels for manylinux_i686	2m 20s
Build wheels for win_amd6	5m 0s
Build wheels for win32	5m 48s
Build wheels for macos	2m 36s
Download Wheels	1s
	48m 47s

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