Issue on hanasaki reservoir restarting

Currently a restart run with hanasaki reservoir model on does not reproduce the results from the simulation without restarting. This is because restart run resets `H06_E_rel_ini` to the values provided in the network file in restart run, while running from earlier time, `H06_E_rel_ini` is modified here [this line](https://github.com/ESCOMP/mizuRoute/blob/b91196742314d548b5c412b947e0584a1fd1751f/route/build/src/lake_route.f90#L362).

To fix this, `H06_E_rel_ini` value needs to be written in restart time and read it from restart file and assign it to `H06_E_rel_ini` when restarting.

This issue affect both cesm-coupling and stand-alone.