Guide should support Juju 3 commands

[Andrea Giovine]

In this documentation:
https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/latest/install-openstack.html#vault

<code>
juju deploy --channel 8.0/stable mysql-router vault-mysql-router
juju add-relation vault-mysql-router:db-router mysql-innodb-cluster:db-router
juju add-relation vault-mysql-router:shared-db vault:shared-db
</code>

add-relation keyword in juju command doesn't exist anymore:
The new command should be
<code>
juju deploy --channel 8.0/stable mysql-router vault-mysql-router
juju integrate vault-mysql-router:db-router mysql-innodb-cluster:db-router
juju integrate vault-mysql-router:shared-db vault:shared-db
</code>

[Peter Matulis (petermatulis)]

Thank you Andrea. We plan on soon making the Deploy Guide use Juju 3 only.

[Andrea Giovine (thelillo93)]

I'm doing this task, how can I contribute?

[Andrea Giovine (thelillo93)]

Hi Peter. I'd like to let you know that I've already transitioned exploiting the Deployment Guide to exclusively use Juju 3 and it's working perfectly. If you have any specific questions or need assistance regarding this task, feel free to ask!

[Peter Matulis (petermatulis)]

@Andrea, thank you for your kind offer. I'm sorry I did not respond to this earlier. Somehow I missed it. It's great that you confirmed that Juju 3 works well.

[Peter Matulis (petermatulis)]

For now we have explicitly stipulated Juju 2.9 by way of the install-juju page.