Add Coverage files to .gitignore

Change-Id: I896702a3bd0cb7d9259ec5d844ec2baea3cbd02c
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/.gitignore b/.gitignore
index da10ebb..4317563 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,4 +35,6 @@
 .project
 .pydevproject
 .settings/
-
+cover/
+.coverage
+coverage.xml