Upgrades the build environment to Node 10, which let's us pull down some security fixes in package dependencies that were unfixed in Node 4.
Also removes Node 4 and 6 binary publishing which were almost never used (20 downloads out of 50,000).
Fixes https://github.com/Project-OSRM/osrm-backend/issues/5312
* optionally include condition and via node coords in InputRestrictionContainer
* only write conditionals to disk, custom serialization for restrictions
* conditional turn lookup, reuse timezone validation from
extract-conditionals
* adapt updater to use coordinates/osm ids, remove internal to external map
* add utc time now parameter to contraction
* only compile timezone code where libshp is found, adapt test running
* slight refactor, more tests
* catch invalid via nodes in restriction parsing, set default cucumber
origin to guinée
* add another run to test mld routed paths
* cosmetic review changes
* Simplify Timezoner for windows build
* Split declaration and parsing parts for opening hours
* adjust conditional tests to run without shapefiles
* always include parse conditionals option
* Adjust travis timeout
* Added dummy TZ shapefile with test timezone polygons
* [skip ci] update changelog
Leaving log files opened was intentional to avoid missing output
that can appear `child.on('exit',...)`.
With this approach cucumber tests hit locally maximum number
of opened files, because node.js keeps all log files opened.
