migrate to new drone syntax

.drone.yml

@@ -1,16 +1,20 @@
-pipeline:
-  ansible-latest:
+---
+kind: pipeline
+name: default
+
+steps:
+  - name: ansible-latest
     image: python:2.7
-    pull: True
+    pull: always
     commands:
       - pip install ansible ansible-later -q
       - git clone https://gitea.rknet.org/ansible/ansible-later-policy.git ~/policy
       - git ls-files *[^LICENSE,.md] | xargs ansible-later -c ~/policy/config.ini
     group: test
 
-  ansible-master:
+  - name: ansible-master
     image: python:2.7
-    pull: True
+    pull: always
     commands:
       - pip install ansible ansible-later -q
       - git clone https://gitea.rknet.org/ansible/ansible-later-policy.git ~/policy