Fallback inventory_dir to the env PWD var (#851)

In ansible 2.4 localhost's inventory_dir is undefined.
Fix this with the env's $PWD lookup used as a fallback.

Fix CI job by passing inventory path as an extra var.

Signed-off-by: Bogdan Dobrelya <bdobreli@redhat.com>

ci/openstack/install-openshift.sh

@@ -17,7 +17,7 @@ export INVENTORY="$PWD/playbooks/provisioning/openstack/sample-inventory"
 
 echo INSTALL OPENSHIFT
 
-ansible-playbook --become --timeout 180 --user openshift -i "$INVENTORY" ../openshift-ansible/playbooks/byo/config.yml -e @extra-vars.yaml
+ansible-playbook --become --timeout 180 --user openshift -i "$INVENTORY" ../openshift-ansible/playbooks/byo/config.yml -e openstack_inventory_path="$INVENTORY" -e @extra-vars.yaml
 
 
 echo Waiting for the router to come up

ci/openstack/provision.sh

@@ -68,7 +68,7 @@ echo
 echo INSTALL OPENSHIFT
 
 ansible-galaxy install -r playbooks/provisioning/openstack/galaxy-requirements.yaml -p roles
-ansible-playbook --timeout 180 --user openshift -i "$INVENTORY" playbooks/provisioning/openstack/provision.yaml -e @extra-vars.yaml
+ansible-playbook --timeout 180 --user openshift -i "$INVENTORY" playbooks/provisioning/openstack/provision.yaml -e openstack_inventory_path="$INVENTORY" -e @extra-vars.yaml
 
 echo
 echo INVENTORY hosts file:

playbooks/provisioning/openstack/provision-openstack.yml

@@ -14,7 +14,7 @@
         - cinder_hosted_registry_size_gb is defined
     - role: static_inventory
       when: openstack_inventory|default('static') == 'static'
-      inventory_path: "{{ openstack_inventory_path|default(inventory_dir) }}"
+      inventory_path: "{{ openstack_inventory_path|default(lookup('env','PWD') + '/inventory') }}"
       private_ssh_key: "{{ openstack_private_ssh_key|default('') }}"
       ssh_config_path: "{{ openstack_ssh_config_path|default('/tmp/ssh.config.openshift.ansible' + '.' + stack_name) }}"
       ssh_user: "{{ ansible_user }}"