Autogen default/tarantool with custom CMAKE_INSTALL_SYSCONFDIR dir for instance

extra/dist/CMakeLists.txt

 # Scripts for a tarantoolctl packaging
 set(SYSV_INITD_PATH ${CMAKE_INSTALL_LIBDIR}/tarantool/tarantool.init)
 configure_file("tarantool.service.in" "tarantool.service")
+configure_file(default/tarantool.in default/tarantool)
 
 if (ENABLE_RPM)
     # chmod +x 655

extra/dist/default/tarantool → extra/dist/default/tarantool.in

@@ -8,6 +8,6 @@ default_cfg = {
     username   = "tarantool",
 }
 
-instance_dir = "/etc/tarantool/instances.enabled"
+instance_dir = "@CMAKE_INSTALL_SYSCONFDIR@/tarantool/instances.enabled"
 
 -- vim: set ft=lua :