This simplifies all the split/join transformations and improves the
memory footprint to a reduced list of unique entries for
HostsEntryValue (originally required for storing the ultimate data for
hosts entries in a form of a quite long single-line string value).
That improves the hosts entries processing for large scale deployments
and removes possible limitations to the sizes of strings.
Closes-bug: #1869375
Change-Id: I5ac498621e9e3c49def565744a7b521cb2cc5c25
Signed-off-by: Bogdan Dobrelya <bdobreli@redhat.com>
3b8e6f78e1