Changes to access.conf prevent crontab execution

Issue

After modifying /etc/security/access.conf, users were unable to execute crontabs as expected.

$ cat /etc/security/access.conf  
 + : root : LOCAL  
 + : @localusers : ALL  
 - : ALL : ALL

In this case, 'localusers' is a group. Local user in example messages below is 'unixrpt'.

 Feb  4 14:33:02 localhost crond[14167]: CRON (unixrpt) ERROR: failed to open PAM security session: Bad file descriptor  
 Feb  4 14:33:02 localhost crond[14167]: CRON (unixrpt) ERROR: cannot set security context

Expected results:

 Feb 4 14:36:02 localhost crond[15191]: (unixrpt) CMD (/usr/local/bin/sysrpt/sysrpt > /dev/null 2>&1)  
 Feb 4 14:37:01 localhost crond[16112]: (unixrpt) CMD (/usr/local/bin/sysrpt/sysrpt > /dev/null 2>&1)