sync-devstack-data: new argument devstack_data_base_dir
When the role is used by grenade, the data directory is shared among
different devstack executions, and the base directory is different,
for example: /opt/stack/data vs /opt/stack/{old,new}.
The new devstack_data_base_dir parameter allows user to specify
a base directory for the data/ directory which is unrelated
to the devstack directory. The default value is devstack_base_dir,
so the default behavior is unchanged.
Change-Id: Ie69b7b51947cbf1a8b31d2701783de2fb56a2d33
diff --git a/roles/sync-devstack-data/defaults/main.yaml b/roles/sync-devstack-data/defaults/main.yaml
index fea05c8..6b5017b 100644
--- a/roles/sync-devstack-data/defaults/main.yaml
+++ b/roles/sync-devstack-data/defaults/main.yaml
@@ -1 +1,2 @@
devstack_base_dir: /opt/stack
+devstack_data_base_dir: "{{ devstack_base_dir }}"