Updating the Db2 SSL certificate after the Cloud Pak for Data self-signed certificate is updated

When the Cloud Pak for Data self-signed certificate is updated, the Db2 SSL certificate also must be updated.

About this task

In Cloud Pak for Data version 5.0.0

As default user db2uadm, disable the Wolverine high-availability monitoring process:
```
wvcli system disable
```

Deactivate the database, stop Db2, and perform an ipclean process:

su - db2inst1 -c "db2 force application all && db2 deactivate db ${DBNAME} && db2stop force && rah 'ipclean -a'"

Reconfigure the Db2 SSL certificate to pick up the changes to the Cloud Pak for Data certificate:

su - db2inst1 -s /bin/bash -c "source /db2u/scripts/include/db2_ssl_functions.sh && rotate_ssl_certs"

Start Db2 and activate the database:

su - db2inst1 -c "db2start && db2 activate db ${DBNAME}"