Fix!!: Ansible requirements needs community.crypto

- Add `community.crypto` (3.1.1) to `ansible-collection-requirements.yml`
- The `octavia_preconf` and `capi_cluster` roles use
`community.crypto.openssh_keypair` but the collection was missing
from requirements, causing ansible-lint to fail with
`syntax-check[unknown-module]` on every PR

- [ ] Verify ansible-lint CI job no longer reports
`couldn't resolve module/action 'community.crypto.openssh_keypair'`

Author: dwith

ansible-collection-requirements.yml

@@ -12,3 +12,6 @@ collections:
   - name: https://github.com/ansible-collections/kubernetes.core
     version: 3.2.0
     type: git
+  - name: https://github.com/ansible-collections/community.crypto
+    version: 3.1.1
+    type: git