[PLUGIN-1829] Add CloudSQLMySQLErrorDetailsProvider #1137

Job	Run time
build (mysql-plugin)	59m 44s
build (postgresql-plugin)	32m 22s
build (oracle-plugin)	2h 3m 40s
build (mssql-plugin)	1h 17m 0s
build (cloudsql-mysql-plugin)	57m 43s
build (cloudsql-postgresql-plugin)	6m 51s
	5h 57m 20s

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