admin/ganglia: update patch file to be in proper patch format
-372,373c372,373
-< collect_every = 1800\n\
-< time_threshold = 3600\n\
----
-> collect_every = 180\n\
-> time_threshold = 180\n\
+--- ganglia-3.7.2/lib/default_conf.h.in.orig 2018-03-19 15:57:41.000000000 -0500
++++ ganglia-3.7.2/lib/default_conf.h.in 2018-03-19 15:57:59.000000000 -0500
+@@ -369,8 +369,8 @@
+ \n\
+ /* Different than 2.5.x default since the old config made no sense */\n\
+ collection_group {\n\
+- collect_every = 1800\n\
+- time_threshold = 3600\n\
++ collect_every = 180\n\
++ time_threshold = 180\n\
+ metric {\n\
+ name = \"disk_total\"\n\
+ value_threshold = 1.0\n\
