Distribute certificate on the controller node when self-signed
certificate is used.

In addition, use self-signed certificate in molecule

Sem-Ver: feature

Change-Id: I20c2a6f19f86630ad8437af148c05792f9ffab1f
diff --git a/.gitignore b/.gitignore
index e02caf7..8d52391 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,9 @@
 doc/source/roles/*/defaults
 molecule/default/group_vars/*
 !molecule/default/group_vars/.gitkeep
+!molecule/default/group_vars/all
+molecule/default/group_vars/all/*
+!molecule/default/group_vars/all/molecule.yml
 molecule/default/host_vars/*
 !molecule/default/host_vars/.gitkeep
 galaxy.yml