cephadm: import types from the modules that defines them

For the test fixtures created for Podman and Docker, import the Podman
and Docker types from the module that defines them, rather than the
cephadm.py file which now imports them.

Signed-off-by: John Mulligan <[email protected]>

Author: phlogistonjohn

src/cephadm/tests/fixtures.py

@@ -17,15 +17,17 @@ def import_cephadm():
 
 
 def mock_docker():
-    _cephadm = import_cephadm()
-    docker = mock.Mock(_cephadm.Docker)
+    from cephadmlib.container_engines import Docker
+
+    docker = mock.Mock(Docker)
     docker.path = '/usr/bin/docker'
     return docker
 
 
 def mock_podman():
-    _cephadm = import_cephadm()
-    podman = mock.Mock(_cephadm.Podman)
+    from cephadmlib.container_engines import Podman
+
+    podman = mock.Mock(Podman)
     podman.path = '/usr/bin/podman'
     podman.version = (2, 1, 0)
     return podman