Enhance installation of mysql_client

Initially I wanted to install mysql-client-5.7 to test mysql server 5.7
but this package is not available for Ubuntu 18+.
I keep those changes because it allow us to specify the name of the
package based on the Ubuntu version.

tests/integration/targets/setup_controller/tasks/main.yml

@@ -8,10 +8,15 @@
   ansible.builtin.import_tasks:
     file: install.yml
 
+# setvars.yml requires the iproute2 package installed by install.yml
 - name: Set variables
   ansible.builtin.import_tasks:
     file: setvars.yml
 
-- name: Install MySQL connector
+- name: Install MySQL local client
+  ansible.builtin.import_tasks:
+    file: client.yml
+
+- name: Install MySQL Python connector
   ansible.builtin.import_tasks:
     file: connector.yml