Automatically detect deleted resources #752

Job	Run time
check (build)	45s
test (py39, postgresql-file-upgrade-from-4.4)	2m 45s
check (pep8)	41s
doc (docs)	1m 20s
test (py39, mysql-file)	3m 15s
doc (docs-gnocchi-web)	1m 31s
test (py39, mysql-file-sqlalchemy14)	3m 29s
test (py39, mysql-swift)	3m 30s
test (py39, mysql-s3)	3m 29s
test (py39, postgresql-file)	3m 30s
test (py39, postgresql-file-sqlalchemy14)	3m 30s
test (py39, postgresql-swift)	3m 28s
test (py39, postgresql-s3)	3m 27s
test (py311, postgresql-file-upgrade-from-4.4)	2m 43s
test (py311, mysql-file)	3m 18s
test (py311, mysql-file-sqlalchemy14)	3m 24s
test (py311, mysql-swift)	3m 16s
test (py311, mysql-s3)	3m 21s
test (py311, postgresql-file)	3m 13s
test (py311, postgresql-file-sqlalchemy14)	3m 26s
test (py311, postgresql-swift)	3m 18s
test (py311, postgresql-s3)	3m 31s
	1h 4m 10s

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