Build providers using bazel

Change-Id: I7d4ebcfb1d593e10aa93f0a4f7111680ed66a7e7
diff --git a/providers/bgp/cfg/BUILD b/providers/bgp/cfg/BUILD
new file mode 100644
index 0000000..da88670
--- /dev/null
+++ b/providers/bgp/cfg/BUILD
@@ -0,0 +1,7 @@
+COMPILE_DEPS = CORE_DEPS + JACKSON + [
+    "//protocols/bgp/api:onos-protocols-bgp-api",
+]
+
+osgi_jar_with_tests(
+    deps = COMPILE_DEPS,
+)