Description of problem:
Remote commands on stock Spacewalk 2.1 are stripped of special characters: ()[]{}<> on execution.

Version-Release number of selected component (if applicable):
2.1

How reproducible:
Easily able to be reproduced on stock 2.1 install.

Steps to Reproduce:
1. Run a remote command such as:

#!/bin/bash
foo="bar";
echo ${foo};

Actual results:
When the command completes, you'd see:

#!/bin/bash
foo="bar";
echo $foo;

Expected results:
Commands should not be stripped and you should see the command that we originally entered.

Additional info:
It appears that workaround has been identified in the following mailing list entries:

http://www.redhat.com/archives/spacewalk-list/2014-April/msg00021.html
http://www.redhat.com/archives/spacewalk-list/2014-May/msg00086.html