Docker run improvements

the start.sh script was failing due to being unable to connect to the api.  I added a sleep and now it is happy.  I also had it expose 9101 so the container doesn't have to be  run interactive and the client can be run local.

[ root@d568d4e59c5b:~ ]$ /root/st2/start.sh 
 * Starting OpenBSD Secure Shell server sshd                             [ OK ] 
 * Starting message broker rabbitmq-server                               [ OK ] 
 * Starting database mongodb                                             [ OK ] 
 * Starting MySQL database server mysqld                                 [ OK ] 
 * Checking for tables which need an upgrade, are corrupt or were 
not closed cleanly.
actionrunner PID: 825
actionrunner PID: 826
actionrunner PID: 827
actionrunner PID: 828
actionrunner PID: 829
actionrunner PID: 830
actionrunner PID: 831
actionrunner PID: 832
actionrunner PID: 833
actionrunner PID: 834
st2api PID: 835
sensor_container PID: 836
history PID: 837
mistral PID: 838
Sleep for 10 seconds while services start...
==============================

      _   ___     ____  _  __ 
     | | |__ \   / __ \| |/ / 
  ___| |_   ) | | |  | | ' /  
 / __| __| / /  | |  | |  <   
 \__ \ |_ / /_  | |__| | . \  
 |___/\__|____|  \____/|_|\_\ 

  st2 is installed and ready  
[ root@d568d4e59c5b:~ ]$