<install> register to RHN with --force; re-runnable
<install> introduce yum CDN base URL; refactor accordingly

Conflicts:
	enterprise/install-scripts/amazon/openshift-amz.sh
	enterprise/install-scripts/generic/openshift.sh
	enterprise/install-scripts/openshift.ks
Merge pull request #99 from sosiouxme/enterprise-2.0-cp

Enterprise 2.0 install
openshift.ks: Delete redundant nl variable

Re-apply commit 5cfcbcfc460a5b8ac36fbe8c7864f963db5409ff, which was
inadvertently reverted by commit d54a587a8170e37fb1d0362c4d416b48acb82a2e.
Merge pull request #101 from Miciah/openshift.ks-delete-redundent-nl-variable

openshift.ks: Delete redundant nl variable