Create empty javadoc and source jar files for sonatype

Change-Id: Id60d9d13d9e9e62e15ae8f34080103934d3e1cbe
(cherry picked from commit a2b2739c9ab6a0aa015fc979592e7e7916af411f)
diff --git a/tools/build/bazel/osgi_java_library.bzl b/tools/build/bazel/osgi_java_library.bzl
index beba414..eddf4ac 100644
--- a/tools/build/bazel/osgi_java_library.bzl
+++ b/tools/build/bazel/osgi_java_library.bzl
@@ -22,6 +22,7 @@
 load("//tools/build/bazel:java_sources.bzl", "java_sources")
 load("//tools/build/bazel:java_sources.bzl", "java_sources_alt")
 load("//tools/build/bazel:javadoc.bzl", "javadoc")
+load("//tools/build/bazel:empty_jar.bzl", "empty_jar")
 load("@io_grpc_grpc_java//:java_grpc_library.bzl", "java_grpc_library")
 
 def _auto_name():
@@ -384,6 +385,8 @@
             deps = deps,
             visibility = visibility,
         )
+    empty_jar(name = name + "-sources", visibility = visibility)
+    empty_jar(name = name + "-javadoc", visibility = visibility)
 
 """
     Creates an OSGI jar and test jar file from a set of source and test files.
@@ -541,6 +544,9 @@
     # rule for building javadocs
     if not suppress_javadocs:
         javadoc(name = name + "-javadoc", deps = deps, srcs = srcs, visibility = visibility)
+    else:
+        empty_jar(name = name + "-javadoc", visibility = visibility)
+        empty_jar(name = name + "-sources", visibility = visibility)
 
     if test_srcs != []:
         native.java_library(