Add distribution info to box.info

There is compile time option PACKAGE in cmake to define
current build distribution info. For community edition
is it Tarantool by default. For enterprise it is
Tarantool Enterprise

There were no option to check distribution name in runtime.
This change adds box.info.package output for CE and TE.

src/box/lua/info.c

@@ -534,6 +534,9 @@ lbox_info_init_static_values(struct lua_State *L)
 	lua_pushstring(L, "version");
 	lua_pushstring(L, tarantool_version());
 	lua_settable(L, -3);
+	lua_pushstring(L, "package");
+	lua_pushstring(L, tarantool_package());
+	lua_settable(L, -3);
 }
 
 /**

test/box/info.result

@@ -79,6 +79,7 @@ t
   - id
   - lsn
   - memory
+  - package
   - pid
   - replication
   - ro