Fix the preserve block of the gitPublish gradle task
Fix the preserve block of the gitPublish gradle task

When this port was originally done the plugin version was 0.x.x and preserve worked with "**/*". It looks like when the plugin went to 1.0.x preserve was changed to have an `include`/`exclude` syntax which defaulted to excluding (deleting) everything previously in the repo root. This was blowing away the OSS website in the gh-pages branch. This now allows everything except the version docs to be kept while the version docs are replaced.

tgianos/genie,Netflix/genie,Netflix/genie,tgianos/genie,Netflix/genie,tgianos/genie,Netflix/genie,tgianos/genie,Netflix/genie,tgianos/genie