impl(o11y): introduce error attributes #243

Job	Run time
filter	1m 0s
downstream-compatibility-spring-generator	11m 20s
downstream-compatibility (java-firestore)	3m 19s
downstream-compatibility (java-bigtable)	7m 57s
downstream-compatibility (java-pubsublite)	3m 14s
downstream-compatibility (java-pubsub)	3m 16s
downstream-compatibility (java-bigquery)	4m 33s
downstream-compatibility (java-spanner)	5m 53s
downstream-compatibility (java-spanner-jdbc)	3m 34s
downstream-compatibility (java-storage)	5m 23s
downstream-compatibility (java-storage-nio)	3m 44s
	53m 13s

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