Use correct value of ansible_distribution in integration tests

This fixes integration tests when run on a RHEL system.  Oddly, the
ansible_distribution='RedHat' when run on RHEL.
Correct ansible_distribution typo

Redhat != RedHat
[test_service] correct upstart service name and permissions

The 'service' utility was unable to find the 'ansible_test' service due to an
unexpected filename.  This patch corrects the filename and adjusts the
permissions to match other service scripts within /etc/init/.