impl(o11y): introduce error attributes #273

Job	Run time
filter	1m 3s
downstream-compatibility-spring-generator	11m 51s
downstream-compatibility (java-bigquery)	4m 54s
downstream-compatibility (java-pubsub)	3m 19s
downstream-compatibility (java-bigtable)	8m 29s
downstream-compatibility (java-firestore)	3m 29s
downstream-compatibility (java-storage-nio)	3m 20s
downstream-compatibility (java-pubsublite)	3m 19s
downstream-compatibility (java-spanner)	6m 18s
downstream-compatibility (java-spanner-jdbc)	3m 40s
downstream-compatibility (java-storage)	5m 13s
	54m 55s

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