Fix connection string

Author: jlongland

template.yaml

@@ -634,7 +634,7 @@ Resources:
         LambdaFunctionName: !Ref AthenaConnectorLambdaNameParameter
         CompositeHandler: PostGreSqlMuxCompositeHandler
         DefaultConnectionString: !Sub |
-          postgres://jdbc:postgresql://${AuroraDatabaseCluster.Endpoint.Address}:${AuroraDatabaseCluster.Endpoint.Port}/default?${!${ResourcePrefixParameter}-cd2-db-user-${EnvironmentParameter}-canvas}&sslmode=verify-ca&sslfactory=org.postgresql.ssl.DefaultJavaSSLFactory
+          postgres://jdbc:postgresql://${AuroraDatabaseCluster.Endpoint.Address}:${AuroraDatabaseCluster.Endpoint.Port}/cd2?${!${ResourcePrefixParameter}-cd2-db-user-${EnvironmentParameter}-canvas}&sslmode=verify-ca&sslfactory=org.postgresql.ssl.DefaultJavaSSLFactory
         DefaultScale: '0'
         DisableSpillEncryption: 'false'
         LambdaMemory: '3008'