VOL-1558 Implementation of openolt adapter with dep for dependency management
Also updated the build system to take this into account.

Currently dep ensure fails due to missing libraries in voltha-go, but the vendor folder has been updated otherwise.
This can be worked around in development using the LOCAL_VOLTHAGO variable described in the readme
This does not build currrently, but that is due to missing code in voltha-go master.

This pattern is consistent with how voltha-go does things, but does not leave you dependent on it to build.

See the readme for how to use dep.

The resourcemanager file is no longer hidden.

Change-Id: I25b8472dbc517b193970597c9f43ddff18c2d89f
diff --git a/vendor/golang.org/x/net/http2/Makefile b/vendor/golang.org/x/net/http2/Makefile
new file mode 100644
index 0000000..55fd826
--- /dev/null
+++ b/vendor/golang.org/x/net/http2/Makefile
@@ -0,0 +1,3 @@
+curlimage:
+	docker build -t gohttp2/curl .
+