Use gofrs/uuid instead of satori/go.uuid

The satori package appears to be unmaintained.  The gofrs package is a
fork that is actively maintained by a larger group of Go developers.

vendor/github.com/gofrs/uuid/.gitignore

@@ -0,0 +1,15 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# binary bundle generated by go-fuzz
+uuid-fuzz.zip