temp: point to ansible collection git branch

Author: gene-redpanda

requirements.yml

@@ -1,7 +1,9 @@
 collections:
   - name: community.general
   - name: redpanda.cluster
-    type: galaxy
+    type: git
+    source: https://github.com/redpanda-data/redpanda-ansible-collection.git
+    version: pr/138-fixes
   - name: ansible.posix
   - name: grafana.grafana
     version: 5.6.0
@@ -10,4 +12,4 @@ collections:
 roles:
   - src: mrlesmithjr.mdadm
   - src: mrlesmithjr.squid
-  - src: geerlingguy.node_exporter
+  - src: geerlingguy.node_exporter