aidl: Improve Effect VTS naming

Use uuid in hexadecimal format in testcase name.

Change-Id: Ib687b6617060e4400a767f23ca0b26cece4005f1
diff --git a/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp b/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
index 8fb4ebf..3056c6c 100644
--- a/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
@@ -137,9 +137,7 @@
             auto descriptor = std::get<PARAM_INSTANCE_NAME>(info.param).second;
             std::string preset =
                     std::to_string(static_cast<int>(std::get<PARAM_PRESETS>(info.param)));
-            std::string name = "Implementor_" + descriptor.common.implementor + "_name_" +
-                               descriptor.common.name + "_UUID_" +
-                               descriptor.common.id.uuid.toString() + "_preset" + preset;
+            std::string name = getPrefix(descriptor) + "_preset" + preset;
             std::replace_if(
                     name.begin(), name.end(), [](const char c) { return !std::isalnum(c); }, '_');
             return name;