ci: Make codcov less strict for now to unblock development (#125)

* Set target to 50% until we figure out the better accuracy with the go
tests.

* Add a make rule that validates codcov's config file.

Makefile

@@ -50,6 +50,10 @@ test\:coverage:
 	go test ./... -coverprofile cover.out
 	go tool cover -func cover.out | grep total | awk '{print $$3}'
 
+.PHONY: validate\:codecov
+validate\:codecov:
+	curl --data-binary @codecov.yml https://codecov.io/validate
+
 .PHONY: lint
 lint:
 	golangci-lint run --config .golangci.sourceinc.yaml

codecov.yml

@@ -15,12 +15,15 @@ coverage:
     # Learn more at https://docs.codecov.io/docs/commit-status
     project:
       default:
-        target: auto
-        threshold: 5% # allow this much decrease on project
+        target: 50%
+        threshold: 0.05 # allow this much decrease on project
         flags:
           - unit
 
-    patch: true
+    patch:
+      default:
+        target: 50%
+        threshold: 0.05 # allow this much decrease in this commit / change / patch.
 
     changes: false