Update MAINTAINERS.md (grafana#196)

* Update MAINTAINERS.md

Signed-off-by: ShuzZzle <niclas.schad@gmail.com>

* add kd7lxl

Signed-off-by: Tom Hayward <thayward@infoblox.com>

* Update MAINTAINERS.md

Signed-off-by: ShuzZzle <niclas.schad@gmail.com>

Co-authored-by: Tom Hayward <thayward@infoblox.com>

Author: nschad

MAINTAINERS.md

@@ -1,3 +1,4 @@
 - Granville Schmidt, Aspen Mesh <granville@aspenmesh.io> (@gramidt)
-- Ken Haines, Microsoft <khaines@microsoft.com> (@khaines)
 - Neeraj Poddar, Aspen Mesh <neeraj@aspenmesh.io> (@nrjpoddar)
+- Niclas Schad, plusserver GmbH <Niclas.Schad@plusserver.com> ([@ShuzZzle](https://github.com/ShuzZzle))
+- Tom Hayward, Infoblox <thayward@infoblox.com> ([@kd7lxl](https://github.com/kd7lxl))