Update images build with repos checkout from gerrit

Change-Id: I27d19e248a1ded6b2a6a2a30b2955da57f23bc3f
diff --git a/trymcp-day01-image/config-drive/meta-data b/trymcp-day01-image/config-drive/meta-data
new file mode 100644
index 0000000..c7ba190
--- /dev/null
+++ b/trymcp-day01-image/config-drive/meta-data
@@ -0,0 +1 @@
+hostname: ubuntu