TLS doesn't work as expected

[weekface]

Bug Report

What version of Kubernetes are you using?

v1.16.4

What version of TiDB Operator are you using?

release-1.1

TiDB v3.0.8

What storage classes exist in the Kubernetes cluster and what are used for PD/TiKV pods?

What's the status of the TiDB cluster pods?

What did you do?

I created the TiDB Cluster with:

enableTLSCluster: false
enableTLSClient: true

What did you expect to see?

tidb-server started with SSL

What did you see instead?

tidb-server started without SSL:

MySQL [(none)]> SHOW STATUS LIKE "%Ssl%";
+-----------------+-------+
| Variable_name   | Value |
+-----------------+-------+
| Ssl_verify_mode | 0     |
| Ssl_version     |       |
| Ssl_cipher      |       |
| Ssl_cipher_list |       |
+-----------------+-------+
4 rows in set (0.058 sec)

MySQL [(none)]> \s
--------------
mysql  Ver 15.1 Distrib 10.3.22-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2

Connection id:		1
Current database:
Current user:		[email protected]
SSL:			Not in use
Current pager:		stdout
Using outfile:		''
Using delimiter:	;
Server:			MySQL
Server version:		5.7.25-TiDB-v3.0.8 MySQL Community Server (Apache License 2.0)
Protocol version:	10
Connection:		10.96.7.9 via TCP/IP
Server characterset:	utf8mb4
Db     characterset:	utf8mb4
Client characterset:	utf8mb4
Conn.  characterset:	utf8mb4
TCP port:		4000
--------------