Update format of install_defaults

In order to respect group_vars install_defaults role moved vars
definition from inlcude_vars to the role defaults. With that now we
need to provide correct path to the defaults during the role import.

Depends-On: https://review.opendev.org/c/openstack/openstack-ansible-plugins/+/923390
Change-Id: I23ad7c955e2d0e267ea6c1aeb50f6be24c515b69

mcapi_vexxhost/playbooks/functional_test.yml

@@ -96,8 +96,10 @@
   tasks:
 
     - name: Setup installation variables
-      import_role:
+      include_role:
         name: openstack.osa.install_defaults
+        defaults_from: "{{ install_method }}"
+        public: true
 
     - name: Create public network and subnet
       include_role:

mcapi_vexxhost/playbooks/mcapi_proxy.yml

@@ -46,8 +46,10 @@
         - always
 
     - name: Setup installation variables
-      import_role:
+      include_role:
         name: openstack.osa.install_defaults
+        defaults_from: "{{ install_method }}"
+        public: true
 
     - name: Install proxy service
       include_role: