add engineering c & d

Don't think CMH looks quite like this. Pretty sure its less square ish and much more of a thinner rectangle

The place has gone or never existed. This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.
POI name: Engineering 7
POI types: landuse-construction
OSM data version: 2018-03-16T17:06:02Z
#mapsme