VOL-1967 move api-server to separate repository

Current with voltha-go acf0adaf2d91ae72b55192cc8a939e0485918d16

Change-Id: I000ea6be0789e20c922bd671562b58a7120892ae
diff --git a/vendor/github.com/pierrec/lz4/go.mod b/vendor/github.com/pierrec/lz4/go.mod
new file mode 100644
index 0000000..f9f570a
--- /dev/null
+++ b/vendor/github.com/pierrec/lz4/go.mod
@@ -0,0 +1,3 @@
+module github.com/pierrec/lz4
+
+require github.com/pkg/profile v1.2.1