Use role defined under another filesystem path

Hi

My playbook is executed from this directory /home/projectA/playbook and it contains roles directory.
One of the task defined within a role of this playbook would like to call another role which is not defined under /home/projectA/playbook/roles
but within a different directory

/home/projectB

istio/
defaults/
meta/
tasks/
vars/
main.yml

Main file

You could use Ansible Galaxy to import your roles. I think this is the
sane approach.