overwrite exec for inetd because respec its is executing exec

[chris-rock]

This PR fixed #1253 until #875 is in place.

$ inspec shell -t docker://1de218c4b67c
Welcome to the interactive InSpec Shell
To find out how to use it, type: help

inspec> describe inetd_conf do
inspec> inetd_conf.exec
=> ["stream", "tcp", "nowait", "root", "/usr/sbin/in.rexecd", "in.rexecd"]
inspec> describe inetd_conf do
inspec>   its('exec') { should eq nil }  
inspec> end  

Profile: inspec-shell
Version: unknown



  inetd.conf exec
     ✖  should eq nil

     expected: nil
          got: ["stream", "tcp", "nowait", "root", "/usr/sbin/in.rexecd", "in.rexecd"]

     (compared using ==)


Test Summary: 0 successful, 1 failures, 0 skipped
inspec> 

[alexpop]

Good workaround for now, thanks Chris!