Add 10% health on hoplite tradition tech.

With the change to the Spartan bonus, it is interesting to add +10% health to the hoplite tradition tech.
The hoplites dominated warfare for a long time, and it is fair to keep this bonus somehow.

Patch by: @borg-
Differential revision: https://code.wildfiregames.com/D5098
Accepted by: @real_tabasco_sauce, @wowgetoffyourcellphone