Some hives produce units +3 tiers to actual evolution factor

[garrotte13]

I have evolution very close 60%. For game with max tier 10 it is a start of producing units Tier-5 with a very low chance. But with some hives for some particular factions ( I suppose it is related to one particular BaseAI, but I'm not sure ) I meet units tier-7 and tier-8 attacking my defenses.
Probably tier-7 is ok if they are rare enough. But tier-8... this units are normally starting at evolution over 85%. For factorio evolution 60% and 85% are very different - one is midgame, the other one is definitely endgame.
Therefore I see two problems with hives here:

1. Plus 3 tiers while it is written in mod changelog about 2 tiers
   - Hives now produce two upper tier units
2. Probably plus tiers is not always a good solution. Maybe it's better to calculate surplus added to evolution factor for selecting tiers. I don't know how it can be done with factorio's prototype mechanics
   Hive is located at coordinates of -250,-1250 if geo factor makes sense here.
   And here is a screenshot, where one can see, that hive is generating T8 biters when most other structures are still generating T4 biters and starting generating T5 with 30% chance
   

[garrotte13]

A quick (but not perfect) fix is to change

Rampant/prototypes/SwarmUtils.lua

Line 1656 in 59c4202

buildEntitySpawner(template, 5)

to
buildEntitySpawner(template, 3)