Deprecate MA0018 in favor of CA1000 #884

Job	Run time
build_and_test (ubuntu-latest, Debug, roslyn3.8)	2m 27s
build_and_test (ubuntu-latest, Debug, roslyn4.2)	1m 53s
build_and_test (ubuntu-latest, Debug, roslyn4.4)	2m 2s
build_and_test (ubuntu-latest, Debug, default)	2m 26s
build_and_test (ubuntu-latest, Release, roslyn3.8)	1m 58s
build_and_test (ubuntu-latest, Release, roslyn4.2)	2m 27s
build_and_test (ubuntu-latest, Release, roslyn4.4)	2m 26s
build_and_test (ubuntu-latest, Release, default)	2m 3s
build_and_test (windows-latest, Debug, roslyn3.8)	6m 46s
build_and_test (windows-latest, Debug, roslyn4.2)	6m 24s
build_and_test (windows-latest, Debug, roslyn4.4)	5m 55s
build_and_test (windows-latest, Debug, default)	6m 39s
build_and_test (windows-latest, Release, roslyn3.8)	6m 3s
build_and_test (windows-latest, Release, roslyn4.2)	5m 50s
build_and_test (windows-latest, Release, roslyn4.4)	5m 57s
build_and_test (windows-latest, Release, default)	6m 8s
compute_package_version	5s
create_nuget	3m 21s
validate_nuget	50s
deploy	16s
create_release	0s
	1h 11m 56s

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