Add Broadcast and Record tests for Frontend with Lnb

Test: VtsHalTvTunerV1_0TargetTest
Bug: 157955950
Change-Id: I71d33b9d481e44879867094a519d7a6c444bc10a
diff --git a/tv/tuner/1.0/vts/functional/FrontendTests.cpp b/tv/tuner/1.0/vts/functional/FrontendTests.cpp
index d54a959..d094510 100644
--- a/tv/tuner/1.0/vts/functional/FrontendTests.cpp
+++ b/tv/tuner/1.0/vts/functional/FrontendTests.cpp
@@ -371,6 +371,14 @@
     return AssertionResult(true);
 }
 
+AssertionResult FrontendTests::setLnb(uint32_t lnbId) {
+    if (!mFrontendCallback) {
+        ALOGW("[vts] open and set frontend callback first.");
+        return failure();
+    }
+    return AssertionResult(mFrontend->setLnb(lnbId) == Result::SUCCESS);
+}
+
 AssertionResult FrontendTests::stopTuneFrontend() {
     EXPECT_TRUE(mFrontend) << "Test with openFrontendById first.";
     Result status;