Various clean up items

- Clean up after xos-migrate tests
- Remove legacy dockerfiles
- Install xos-genx from local copy in Dockerfile.client, as otherwise it
  pulls an older version from pypi as xos-api requires it.

Change-Id: Id613d269c2825e06a83cb50eef7c98125b9cff7a
diff --git a/.gitignore b/.gitignore
index 20ecd3e..f5310c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,10 +28,6 @@
 *.retry
 
 # tmp files
-containers/chameleon/tmp.chameleon/
-containers/xos/local_certs.crt
-containers/xos/tmp.chameleon/
-containers/xos/BUILD/
 venv-xos*
 _book/
 .noseids
@@ -44,6 +40,7 @@
 *coverage.xml
 cover
 .tox
+lib/xos-migrate/xosmigrate/django.log
 
 # python module build files
 *.egg-info