apt dist-upgrade reboot enabled, lint fixes
second round, for testing
lint clean, testing needed
prereqs assert w/dig doesn't loop properly
use head not all for target hosts in single

Change-Id: Ie530204b989a73828f45508fcdd4374a3362c764
diff --git a/roles/common-prep/defaults/main.yml b/roles/common-prep/defaults/main.yml
new file mode 100644
index 0000000..0bcd73c
--- /dev/null
+++ b/roles/common-prep/defaults/main.yml
@@ -0,0 +1,3 @@
+---
+
+run_dist_upgrade: true