setup-openstack-storpool/pre: Install StorPool Ansible requirements

Change-Id: I5953eb784f0ccee8ca7665d919b40794c0dd32c3
diff --git a/playbooks/setup-openstack-storpool/pre.yaml b/playbooks/setup-openstack-storpool/pre.yaml
index 242fbd1..0aa6873 100644
--- a/playbooks/setup-openstack-storpool/pre.yaml
+++ b/playbooks/setup-openstack-storpool/pre.yaml
@@ -371,6 +371,10 @@
         repo: 'https://github.com/storpool/ansible'
         dest: "{{ storpool_ansible_dir }}"
 
+    - name: Install StorPool Ansible Requirements
+      ansible.builtin.pip:
+        requirements: "{{ storpool_ansible_dir }}/requirements.txt"
+
     - name: Configure a Git Identity
       ansible.builtin.command:
         argv: "{{ item }}"