Description of problem:
When a process listens on port 8080, katello-installer fails to succeed, logging weird tomcat6 start error.

No doc mentions that port to be free.


Version-Release number of selected component (if applicable):
(not sure, coming from Sat6 testing day)


How reproducible:
100%


Steps to Reproduce:
1. Have any process listening on port 8080
2. launch katello-installer


Actual results:
Could not start Service[tomcat6]: Execution of '/usr/share/katello-installer/modules/service_wait/bin/service-wait tomcat6 start' returned 5: Starting tomcat6: [  OK  ]
 /Stage[main]/Candlepin::Service/Service[tomcat6]/ensure: change from stopped to running failed: Could not start Service[tomcat6]: Execution of '/usr/share/katello-installer/modules/service_wait/bin/service-wait tomcat6 start' returned 5: Starting tomcat6: [  OK  ]
 /Stage[main]/Candlepin::Service/Service[tomcat6]: Failed to call refresh: Could not restart Service[tomcat6]: Execution of '/usr/share/katello-installer/modules/service_wait/bin/service-wait tomcat6 restart' returned 5: Stopping tomcat6: [  OK  ]
 /Stage[main]/Candlepin::Service/Service[tomcat6]: Could not restart Service[tomcat6]: Execution of '/usr/share/katello-installer/modules/service_wait/bin/service-wait tomcat6 restart' returned 5: Stopping tomcat6: [  OK  ]
 /Stage[main]/Candlepin::Service/Exec[cpinit]: Failed to call refresh: /usr/bin/wget --timeout=30 --tries=5 --retry-connrefused -qO- http://localhost:8080/candlepin/admin/init >/var/log/candlepin/cpinit.log 2>&1 && touch /var/lib/candlepin/cpinit_done returned 8 instead of one of [0]
 /Stage[main]/Candlepin::Service/Exec[cpinit]: /usr/bin/wget --timeout=30 --tries=5 --retry-connrefused -qO- http://localhost:8080/candlepin/admin/init >/var/log/candlepin/cpinit.log 2>&1 && touch /var/lib/candlepin/cpinit_done returned 8 instead of one of [0]
 /Stage[main]/Foreman::Database/Foreman::Rake[db:seed]/Exec[foreman-rake-db:seed]: Failed to call refresh: /usr/sbin/foreman-rake db:seed returned 1 instead of one of [0]
 /Stage[main]/Foreman::Database/Foreman::Rake[db:seed]/Exec[foreman-rake-db:seed]: /usr/sbin/foreman-rake db:seed returned 1 instead of one of [0]
Installing             Done                                               [100%] [..........................................................................................................]
  Something went wrong! Check the log for ERROR-level output
  The full log is at /var/log/katello-installer/katello-installer.log


Expected results:
Some better error log to be provided (katello-installer.log does not have anything usable, I had to check catalina.out)

Installation doc should mention port 8080 to be free.


Additional info: