standardize descriptions of ecosystem tests

data/blueprints/library/test/ecosystem/in/buildings-spec.csv

@@ -1,5 +1,5 @@
 #notes
-description=all the underground buildings
+description=underground buildings coverage test
 width=24
 height=37
 depth=2

data/blueprints/library/test/ecosystem/in/stockpiles-dig.csv

@@ -1,12 +0,0 @@
-#dig label(dig)
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d
-d,d,d,d,d,d,d,d,d,d,d,d

data/blueprints/library/test/ecosystem/in/stockpiles-spec.csv

@@ -1,4 +1,4 @@
 #notes
-description=all the stockpiles, including multi-type
+description=stockpile coverage test
 width=12
 height=11

data/blueprints/library/test/ecosystem/in/tracks-spec.csv

@@ -1,5 +1,5 @@
 #notes
-description=track system
+description=track coverage test
 width=5
 height=2
 depth=2