puppetdb-terminus: migrate to openvoxdb-terminus

[bastelfreak]

Before we merge this: I think the file is currently not used. Perforce used to release it as a gem in... 2013! https://rubygems.org/gems/puppetdb-terminus

Since that it's just distributed as rpm/deb package. And the package doesn't contain the gemspec because.. the package is essentially a puppet module:

# dpkg-query -L openvoxdb-termini
/.
/opt
/opt/puppetlabs
/opt/puppetlabs/puppet
/opt/puppetlabs/puppet/lib
/opt/puppetlabs/puppet/lib/ruby
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/reports
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/reports/puppetdb.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/node
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/node/puppetdb.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/catalog
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/catalog/puppetdb.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/facts
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/facts/puppetdb.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/facts/puppetdb_apply.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/resource
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/indirector/resource/puppetdb.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb/command.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb/config.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb/http.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb/atom.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb/char_encoding.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/puppetdb/command_names.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/face
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/face/node
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/face/node/deactivate.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/face/node/status.rb
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/functions
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/functions/puppetdb_query.rb
/usr
/usr/share
/usr/share/doc
/usr/share/doc/openvoxdb-termini
/usr/share/doc/openvoxdb-termini/changelog.gz

So maybe we just delete the gemspec?