JON Apache Plugin cannot parse config files that contain Variables

Issue

• JON unable to discover httpd instances when httpd.conf contains environment variables
• Errors in the agent.log when it is trying to discover the Apache instance whose httpd.conf file contains environment variables;
• Error complaining that we are using shell variables inside httpd.conf.
• We have many Apache configuration files that are included using environment variables but JON fails to load configuration and Apache plug-in throws an exception:

^\/my\/path\/2\.1\/0\/httpd\/${tmp}\/test_conf\.cfg$
                                        ^
        at java.util.regex.Pattern.error(Pattern.java:1924)
        at java.util.regex.Pattern.closure(Pattern.java:3104)
        at java.util.regex.Pattern.sequence(Pattern.java:2101)
        at java.util.regex.Pattern.expr(Pattern.java:1964)
        at java.util.regex.Pattern.compile(Pattern.java:1665)
        at java.util.regex.Pattern.<init>(Pattern.java:1337)
        at java.util.regex.Pattern.compile(Pattern.java:1022)
        at org.rhq.augeas.util.GlobFilter.convert(GlobFilter.java:143)
        at org.rhq.augeas.util.GlobFilter.<init>(GlobFilter.java:56)
        at org.rhq.augeas.util.Glob.match(Glob.java:154)
        at org.rhq.plugins.apache.parser.ApacheParserImpl.getIncludeFiles(ApacheParserImpl.java:134)
        at org.rhq.plugins.apache.parser.ApacheParserImpl.addDirective(ApacheParserImpl.java:64)
        at org.rhq.plugins.apache.parser.ApacheConfigReader.searchFile(ApacheConfigReader.java:48)

• JON Apache Plugin cannot parse config files that contain Variables;