install all required debops extras for ansible

.ci/debops_common_install.py

@@ -10,7 +10,7 @@ ci_lib.run_batches([
         # Must be installed separately, as PyNACL indirect requirement causes
         # newer version to be installed if done in a single pip run.
         'pip install "pycparser<2.19"',
-        'pip install -qqq debops==2.1.2 netaddr==0.8.0 ansible==%s' % ci_lib.ANSIBLE_VERSION,
+        'pip install -qqq debops[ansible]==2.1.2 ansible==%s' % ci_lib.ANSIBLE_VERSION,
     ],
     [
         'docker pull %s' % (ci_lib.image_for_distro('debian'),),