Add android version to gki version name

Both android version and kernel version are important to KMI, so adding
android version to gki version name too.

Bug: 302465542
Test: vm run-microdroid --gki android14-6.1
Test: atest MicrodroidHostTestCases
Change-Id: I3ee95c9d9c6576ee5869346c72cb0a3fb6cbdce2
diff --git a/apex/sign_virt_apex.py b/apex/sign_virt_apex.py
index 0c5bc72..a975be0 100644
--- a/apex/sign_virt_apex.py
+++ b/apex/sign_virt_apex.py
@@ -411,7 +411,7 @@
     RunCommand(args, cmd)
 
 
-gki_versions = ['6.1']
+gki_versions = ['android14-6.1']
 
 # dict of (key, file) for re-sign/verification. keys are un-versioned for readability.
 virt_apex_non_gki_files = {