-Avoid confusing perl in rmblade about '@' character in noderange

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@5397 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/share/xcat/tools/rmblade

@@ -77,7 +77,8 @@ print "ip: $ip\n";
 print "host: $mm\n";
 print "slot: $slot\n";
 # we now have slot and amm.  Need to now get which blade this is:
-my $node = `nodels mp.id==$slot@mp.mpa==$mm`;
+my $nlscmd = "nodels mp.id==$slot".'@'."mp.mpa==$mm"
+my $node = `$nlscmd`;
 chomp($node);
 print "node: $node\n";
 if($node ne ''){