VOL-235 this update adds a .gitignore file to the
install/ansible/host_vars directory to ensure that it exists in the
repo and is downloaded when the repo is cloned or synced.

Change-Id: I585d6e271b86d2b3ce1f38b6a7cf6801dd9c60ab
diff --git a/install/ansible/host_vars/.gitignore b/install/ansible/host_vars/.gitignore
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/install/ansible/host_vars/.gitignore