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/google.golang.org/grpc/go.mod b/vendor/google.golang.org/grpc/go.mod
new file mode 100644
index 0000000..0418807
--- /dev/null
+++ b/vendor/google.golang.org/grpc/go.mod
@@ -0,0 +1,20 @@
+module google.golang.org/grpc
+
+require (
+	cloud.google.com/go v0.26.0 // indirect
+	github.com/BurntSushi/toml v0.3.1 // indirect
+	github.com/client9/misspell v0.3.4
+	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
+	github.com/golang/mock v1.1.1
+	github.com/golang/protobuf v1.2.0
+	golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3
+	golang.org/x/net v0.0.0-20180826012351-8a410e7b638d
+	golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be
+	golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f // indirect
+	golang.org/x/sys v0.0.0-20180830151530-49385e6e1522
+	golang.org/x/text v0.3.0 // indirect
+	golang.org/x/tools v0.0.0-20190114222345-bf090417da8b
+	google.golang.org/appengine v1.1.0 // indirect
+	google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8
+	honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099
+)