Add etc/grml/fai/make-fai-nfsroot.conf + etc/grml/fai/nfsroot.conf to…

… .gitignore

Those files are generated during run-time and removed
after grml-live execution finished. If grml-live is used
directly from inside grml-live.git we don't want add
those files by mistake.

.gitignore

@@ -1,2 +1,4 @@
 etc/grml/fai/config/basefiles
 etc/grml/fai/config/config
+etc/grml/fai/make-fai-nfsroot.conf
+etc/grml/fai/nfsroot.conf