Revert "Install cloud-init package on the centos appliance"
Revert "Install cloud-init package on the centos appliance"

This should fix the problems in:
https://github.com/ManageIQ/manageiq/issues/2936
https://bugzilla.redhat.com/show_bug.cgi?id=1222591

This reverts commit e5cf1565330441000ddec3763f5cd239740f73e2.

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