Import of core OSM charm layers

Signed-off-by: Adam Israel <adam.israel@canonical.com>
Change-Id: Iff2c30e3b952d52891c190ec2d7a31a650e5ad53
diff --git a/charms/layers/.gitignore b/charms/layers/.gitignore
new file mode 100644
index 0000000..7da5881
--- /dev/null
+++ b/charms/layers/.gitignore
@@ -0,0 +1,3 @@
+deps/
+builds/
+