Add columns to namespace for vts target base test invocation

Test: make vts
Change-Id: Ia0284fbc11eadef572dd510bb5847160852bd517
diff --git a/bluetooth/1.0/vts/functional/VtsHalBluetoothV1_0TargetTest.cpp b/bluetooth/1.0/vts/functional/VtsHalBluetoothV1_0TargetTest.cpp
index ce15875..c8c7cb5 100644
--- a/bluetooth/1.0/vts/functional/VtsHalBluetoothV1_0TargetTest.cpp
+++ b/bluetooth/1.0/vts/functional/VtsHalBluetoothV1_0TargetTest.cpp
@@ -121,7 +121,7 @@
  public:
   virtual void SetUp() override {
     // currently test passthrough mode only
-    bluetooth = testing::VtsHalHidlTargetBaseTest::getService<IBluetoothHci>();
+    bluetooth = ::testing::VtsHalHidlTargetBaseTest::getService<IBluetoothHci>();
     ASSERT_NE(bluetooth, nullptr);
     ALOGI("%s: getService() for bluetooth is %s", __func__,
           bluetooth->isRemote() ? "remote" : "local");