Remove prefix full_ from debuggable

Bug: 260147409
Test: atest MicrodroidHostTestCases;
atest MicrodroidTestApp;
atest ComposHostTestCases

Change-Id: I881111fe75051b1bc9db00446ba959a28597ca79
diff --git a/virtualizationservice/src/payload.rs b/virtualizationservice/src/payload.rs
index f84cb86..eb3e9eb 100644
--- a/virtualizationservice/src/payload.rs
+++ b/virtualizationservice/src/payload.rs
@@ -405,7 +405,7 @@
 ) -> Result<()> {
     let debug_suffix = match config.debugLevel {
         DebugLevel::NONE => "normal",
-        DebugLevel::FULL => "full_debuggable",
+        DebugLevel::FULL => "debuggable",
         _ => return Err(anyhow!("unsupported debug level: {:?}", config.debugLevel)),
     };
     let initrd = format!("/apex/com.android.virt/etc/microdroid_initrd_{}.img", debug_suffix);