Failing to setup connection: "Failed to fetch schema. Please try again"

[ChristopheDuong]

Expected Behavior

Setting up a connection between MySQL and Postgres where I replicate from a schema named "test.dir"

Current Behavior

Even though the logs seems to be completing successfully:

2021-01-25 16:50:38 INFO (/tmp/workspace/24/0) WorkerRun(call):58 - Executing worker wrapper...
2021-01-25 16:50:38 INFO (/tmp/workspace/24/0) LineGobbler(voidCall):69 - Checking if airbyte/source-mysql:0.1.8 exists...
2021-01-25 16:50:38 INFO (/tmp/workspace/24/0) LineGobbler(voidCall):69 - airbyte/source-mysql:0.1.8 was found locally.
2021-01-25 16:50:38 DEBUG (/tmp/workspace/24/0) DockerProcessBuilderFactory(create):104 - Preparing command: docker run --rm -i -v airbyte_workspace_dev:/data -v /tmp/airbyte_local_dev:/local -w /data/24/0 --network host airbyte/source-mysql:0.1.8 discover --config tap_config.json
2021-01-25 16:50:39 INFO (/tmp/workspace/24/0) DefaultAirbyteStreamFactory(lambda$create$0):73 - 2021-01-25 16:50:39 INFO i.a.i.s.m.MySqlSource(main):75 - {} - starting source: class io.airbyte.integrations.source.mysql.MySqlSource
2021-01-25 16:50:39 INFO (/tmp/workspace/24/0) DefaultAirbyteStreamFactory(lambda$create$0):73 - 2021-01-25 16:50:39 INFO i.a.i.b.IntegrationRunner(run):78 - {} - Running integration: io.airbyte.integrations.source.mysql.MySqlSource
2021-01-25 16:50:39 INFO (/tmp/workspace/24/0) DefaultAirbyteStreamFactory(lambda$create$0):73 - 2021-01-25 16:50:39 INFO i.a.i.b.IntegrationCliParser(parseOptions):135 - {} - integration args: {discover=null, config=tap_config.json}
2021-01-25 16:50:39 INFO (/tmp/workspace/24/0) DefaultAirbyteStreamFactory(lambda$create$0):73 - 2021-01-25 16:50:39 INFO i.a.i.b.IntegrationRunner(run):82 - {} - Command: DISCOVER
2021-01-25 16:50:39 INFO (/tmp/workspace/24/0) DefaultAirbyteStreamFactory(lambda$create$0):73 - 2021-01-25 16:50:39 INFO i.a.i.b.IntegrationRunner(run):83 - {} - Integration config: IntegrationConfig{command=DISCOVER, configPath='tap_config.json', catalogPath='null', statePath='null'}
2021-01-25 16:50:40 INFO (/tmp/workspace/24/0) LoggingTrackingClient(track):55 - track. userId: f7542c84-e807-4033-88a1-1687c765a7d0 action: Connector Jobs, metadata: {job_type=discoverSchema, job_id=24, attempt_id=[], job_uuid=98b435f7-720f-3958-a425-b55930bfd239, attempt_uuid=98b435f7-720f-3958-a425-b55930bfd239, connector_source=MySQL, connector_source_definition_id=435bb9a5-7887-4809-aa58-28c27df0d7ad, attempt_stage=ENDED, attempt_completion_status=SUCCEEDED}
(venv) 

The UI shows:
"Failed to fetch schema. Please try again"

Steps to Reproduce

1. docker run --rm --name mysql-test-source -e MYSQL_ROOT_PASSWORD=password -p 3001:3306 mysql:8.0
2. Create test data:

create schema if not exists `test.dir`;
create table if not exists `test.dir`.`Product.property`
(
	col1 varchar(100),
	`col2.3` varchar(100)	
); 
insert into `test.dir`.`Product.property`(col1, `col2.3`)
values('Test Product', 'Product Description');

3. sync between MySQL source to Destination

Severity of the bug for you

High

Airbyte Version

0.13.0

Additional context

Related to #1816