Cherry pick gNMI and Stratum related changes to this branch

Cherry picked commits:
20211 Update gNMI version and build script
20247 [ONOS-7829] Implement AbstractGrpcClient and AbstractGrpcClientControl
20233 [ONOS-7141][ONOS-7142] Add GnmiClient and GnmiController
20234 Refactor OpenConfig gNMI device description descovery
20260 [ONOS-7831] Implement GnmiHandshaker
20270 Add Stratum driver

Change-Id: I81ad8bce45251af5909cfcac0edbcfd11c8ebf1d
diff --git a/protocols/gnmi/api/BUILD b/protocols/gnmi/api/BUILD
new file mode 100644
index 0000000..1cf1a3d
--- /dev/null
+++ b/protocols/gnmi/api/BUILD
@@ -0,0 +1,8 @@
+COMPILE_DEPS = CORE_DEPS + [
+    "//protocols/grpc/api:onos-protocols-grpc-api",
+    "//protocols/gnmi/stub:onos-protocols-gnmi-stub",
+]
+
+osgi_jar(
+    deps = COMPILE_DEPS,
+)