Hard clean mysql before reinstalling

.github/workflows/ci.yml

@@ -58,7 +58,10 @@ jobs:
           tar xfz "dist/ispyb-database.tar.gz"
 
           apt-get update && apt-get install sudo -y
-          apt-get remove --purge mysql-\* -y
+          sudo apt purge mysql-server mysql-client mysql-common mysql-server-core-* mysql-client-core-* -y
+          sudo rm -rf /etc/mysql /var/lib/mysql /var/log/mysql
+          sudo apt autoremove
+          sudo apt autoclean
           apt-get install mysql-server mysql-client --fix-broken --fix-missing -y
           sudo service mysql start