Reworks Restriction Whitelist / Blacklist, resolves #2833

Takes a stricter aproach for whitelisting / blacklisting restrictions:

- uses `restriction=`
- uses more specific `restriction:<type>=`
- uses `except=<type>` to invert

Where `type` is the type of transportation to restrict, e.g. `motorcar`.

https://github.com/Project-OSRM/osrm-backend/issues/2833

include/extractor/restriction_parser.hpp

@@ -29,7 +29,7 @@ class ScriptingEnvironment;
  *
  * While this class does not directly invoke any lua code _per relation_ it does
  * load configuration values from the profile, that are saved in variables.
- * Namely ```use_turn_restrictions``` and ```get_exceptions```.
+ * Namely ```use_turn_restrictions``` and ```get_restrictions```.
  *
  * The restriction is represented by the osm id of the from way, the osm id of the
  * to way and the osm id of the via node. This representation must be post-processed
@@ -47,7 +47,7 @@ class RestrictionParser
   private:
     bool ShouldIgnoreRestriction(const std::string &except_tag_string) const;
 
-    std::vector<std::string> restriction_exceptions;
+    std::vector<std::string> restrictions;
     bool use_turn_restrictions;
 };
 }

include/extractor/scripting_environment.hpp

@@ -51,7 +51,7 @@ class ScriptingEnvironment
     virtual const ProfileProperties &GetProfileProperties() = 0;
 
     virtual std::vector<std::string> GetNameSuffixList() = 0;
-    virtual std::vector<std::string> GetExceptions() = 0;
+    virtual std::vector<std::string> GetRestrictions() = 0;
     virtual void SetupSources() = 0;
     virtual int32_t GetTurnPenalty(double angle) = 0;
     virtual void ProcessSegment(const osrm::util::Coordinate &source,

include/extractor/scripting_environment_lua.hpp

@@ -53,7 +53,7 @@ class LuaScriptingEnvironment final : public ScriptingEnvironment
     LuaScriptingContext &GetLuaContext();
 
     std::vector<std::string> GetNameSuffixList() override;
-    std::vector<std::string> GetExceptions() override;
+    std::vector<std::string> GetRestrictions() override;
     void SetupSources() override;
     int32_t GetTurnPenalty(double angle) override;
     void ProcessSegment(const osrm::util::Coordinate &source,