(#478) /etc/rc.local should remain a symlink on Red Hat

This change adds the --follow-symlinks option to the sed command in the
os_complete.erb template of the redhat model. This is necessary because
the file /etc/rc.local on Red Hat should be a symlink to rc.d/rc.local
but, without this option, it becomes a regular file.

Note that the same change should not be necessary in Ubuntu and Debian
models because /etc/rc.local is not a symlink on those operating systems.

Closes #478
Update CI testing Puppet installation script repo setup

Puppet repositories have recently changed, resulting in a need to update the
scripts we use in the CI system to reflect that.  This allows Puppet to be
installed as part of the test regime.

This has not changed the broker installation process in any way, since that is
not using any of the repositories that have changed structure.

There are not functional changes to Razor as a result of this work, as it is
strictly related to Puppet Labs internal CI infrastructure.

Signed-off-by: Daniel Pittman <daniel@rimspace.net>
Merge pull request #481 from daniel-pittman/bug/master/adapt-to-new-puppet-repo-layout-for-acceptance-tests

Update CI testing Puppet installation script repo setup
Update acceptance tests after internal machines were renamed.

This updates the acceptance test performance suite to reflect internal machine
name changes on the Puppet Labs network.  This restores the acceptance tests
to their fully functional, original state.

Signed-off-by: Daniel Pittman <daniel@rimspace.net>
Merge pull request #482 from daniel-pittman/bug/master/adapt-to-changed-internal-machine-name-in-acceptance-tests

Update acceptance tests after internal machines were renamed.
Merge pull request #479 from cr3/478

(#478) /etc/rc.local should remain a symlink on Red Hat
Fixed size undefined error in tail method extension of class File.
Merge pull request #484 from mhanco/bug/master/slice-log-class-file-tail-method-size-undefined

Fixed size undefined error in tail method extension of class File.