Invoke scripts directly from zenpack dir, not libexec, as much as possible.
Merge pull request #80 from zenoss/feature/ZEN-14585

Invoke scripts directly from zenpack dir, not libexec, as much as possib...
Move expected_ceilometer_heartbeats into a hub service.
Fix logger
Merge pull request #81 from zenoss/feature/openstack_hub_service

Feature/openstack hub service
Fix permissions on installed scripts.
Merge pull request #82 from zenoss/feature/chmod

Fix permissions on installed scripts.
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