Add @danielnelson as a maintainer for the telegraf image

library/telegraf

@@ -1,4 +1,5 @@
-Maintainers: Jonathan A. Sternberg <[email protected]> (@jsternberg)
+Maintainers: Jonathan A. Sternberg <[email protected]> (@jsternberg),
+             Daniel Nelson <[email protected]> (@danielnelson)
 GitRepo: git://github.com/influxdata/influxdata-docker
 GitCommit: 961721bf6664bcd74a6e479144b5c5fcadf72b4a