Handle errors more carefully to access glue api when checking the existence

[civitaspo]

• digdag-operator-athena/src/main/scala/pro/civitaspo/digdag/plugin/athena/aws/glue/catalog/TableCatalog.scala

  Lines 31 to 36 in bb19e79

  	def exists(catalogIdOption: Option[String],
  	database: String,
  	table: String): Boolean =
  	{
  	Try(describe(catalogIdOption, database, table)).isSuccess
  	}

• digdag-operator-athena/src/main/scala/pro/civitaspo/digdag/plugin/athena/aws/glue/catalog/PartitionCatalog.scala

  Lines 93 to 99 in bb19e79

  	def exists(catalogIdOption: Option[String] = None,
  	database: String,
  	table: String,
  	partitionKv: Map[String, String]): Boolean =
  	{
  	Try(describe(catalogIdOption, database, table, partitionKv)).isSuccess
  	}

• digdag-operator-athena/src/main/scala/pro/civitaspo/digdag/plugin/athena/aws/glue/catalog/DatabaseCatalog.scala

  Lines 23 to 27 in bb19e79

  	def exists(catalogIdOption: Option[String],
  	database: String): Boolean =
  	{
  	Try(describe(catalogIdOption, database)).isSuccess
  	}