added rhel 6.7
diff --git a/os/rhel67.yml b/os/rhel67.yml
new file mode 100644
index 0000000..555638a
--- /dev/null
+++ b/os/rhel67.yml
@@ -0,0 +1,3 @@
+---
+# rhel 6.7
+image_id: ami-e9578c82
\ No newline at end of file