feat: Add cloud version string

pycloudlib/cloud.py

@@ -260,6 +260,10 @@ def use_key(self, public_key_path, private_key_path=None, name=None):
         self._log.debug("using SSH key from %s", public_key_path)
         self.key_pair = KeyPair(public_key_path, private_key_path, name)
 
+    def version(self) -> Optional[str]:
+        """Version string of the platform."""
+        return None
+
     def _check_and_set_config(
         self,
         config_file: Optional[ConfigFile],

pycloudlib/lxd/cloud.py

@@ -437,6 +437,10 @@ def clean(self) -> List[Exception]:
                     exceptions.append(e)
         return exceptions
 
+    def version(self):
+        """LXD version."""
+        return subp(["lxd", "--version"]).rstrip()
+
 
 class LXDContainer(_BaseLXD):
     """LXD Containers Cloud Class."""

pycloudlib/qemu/cloud.py

@@ -660,3 +660,12 @@ def clean(self) -> List[Exception]:
             exceptions.append(e)
 
         return exceptions
+
+    def version(self):
+        """Qemu version."""
+        return (
+            subprocess.run(self.qemu_binary, capture_output=True)
+            .stdout.decode()
+            .splitlines()
+            .pop(0)
+        )

tests/integration_tests/test_public_api.py

@@ -112,6 +112,8 @@ def test_public_api(cloud: BaseCloud):
         # Not sure there's a great way to test this other than not raising
         cloud.image_serial(image_id)
 
+    version = cloud.version()
+    assert  isinstance(version, str) or version is None
     with cloud.launch(image_id=image_id, user_data=cloud_config) as instance:
         instance.wait()
         exercise_instance(instance)