Fix problem with corosync_cmapctl_cmd_list dataaource (#2955)
Fix problem with corosync_cmapctl_cmd_list dataaource (#2955)

* Check for presence of command on system before returning results to be
  executed
* Make list of commands consistent for all executables
* Fix #2954

Signed-off-by: Bob Fahr <eb0294f52f6c386cf2b3e4e2dc954fc284050e09@users.noreply.github.com>
RedHatInsights/insights-core,RedHatInsights/insights-core