fix bug 2873512 rvitals ouput on a group not sorted

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@4347 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/PPCvitals.pm

@@ -373,9 +373,11 @@ sub all {
         @{voltage(@_)}, 
         @{state(@_)},
         @{power(@_)},
-	@{lcds(@_)}, 
+        @{lcds(@_)}, 
     ); 
-    return( \@values );
+
+    my @sorted_values = sort {$a->[0] cmp $b->[0]} @values;
+    return( \@sorted_values );
 }