Fix Eclipse project generation

It was failing with error:

ERROR: /home/ehecabo/workspace/gerrit/tools/eclipse/BUILD:45:1: no such
target '//plugins/its-rtc:its-rtc__plugin_test_deps': target
'its-rtc__plugin_test_deps' not declared in package 'plugins/its-rtc'
defined by /home/workspace/gerrit/plugins/its-rtc/BUILD and referenced
by '//tools/eclipse:main_classpath_collect'

Change-Id: I4ad71e990dbdd6ec4a504d60ebfaf604641c6e80

BUILD

diff --git a/BUILD b/BUILD
index 124eb10..f5c232f 100644
--- a/BUILD
+++ b/BUILD
@@ -28,9 +28,17 @@
 
 junit_tests(
     name = "its_rtc_tests",
+    testonly = 1,
     srcs = glob(["src/test/java/**/*.java"]),
     tags = ["its-rtc"],
-    deps = PLUGIN_DEPS + PLUGIN_TEST_DEPS + [
+    deps = ["its-rtc__plugin_test_deps"],
+)
+
+java_library(
+    name = "its-rtc__plugin_test_deps",
+    testonly = 1,
+    visibility = ["//visibility:public"],
+    exports = PLUGIN_DEPS + PLUGIN_TEST_DEPS + [
         ":its-rtc__plugin",
         "//plugins/its-base:its-base",
         "@mockito//jar",