fix(coverage): use `go list` instead of `godir`

Signed-off-by: Matthew Fisher <matt.fisher@microsoft.com>

scripts/coverage.sh

@@ -22,11 +22,10 @@ profile="${coverdir}/cover.out"
 
 pushd /
 hash goveralls 2>/dev/null || go get github.com/mattn/goveralls
-hash godir 2>/dev/null || go get github.com/Masterminds/godir
 popd
 
 generate_cover_data() {
-  for d in $(godir) ; do
+  for d in $(go list ./...) ; do
     (
       local output="${coverdir}/${d//\//-}.cover"
       go test -coverprofile="${output}" -covermode="$covermode" "$d"