qemu: virtiofs: shorten pid filename

There is no need to repeat the shortName, since it's
already present in the directory path.

Also use just 'fs' instead of 'virtiofsd'.

https://bugzilla.redhat.com/show_bug.cgi?id=1816577Signed-off-by: NJán Tomko <jtomko@redhat.com>
Suggested-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_virtiofs.c

@@ -42,13 +42,9 @@ qemuVirtioFSCreatePidFilename(virDomainObjPtr vm,
                               const char *alias)
 {
     qemuDomainObjPrivatePtr priv = vm->privateData;
-    g_autofree char *shortName = NULL;
     g_autofree char *name = NULL;
 
-    if (!(shortName = virDomainDefGetShortName(vm->def)))
-        return NULL;
-
-    name = g_strdup_printf("%s-%s-virtiofsd", shortName, alias);
+    name = g_strdup_printf("%s-fs", alias);
 
     return virPidFileBuildPath(priv->libDir, name);
 }