collectd plugin uses nagios user for db access, so grant select to sipstats.*

db_scripts/diff/9733.down

@@ -0,0 +1 @@
+revoke select on sipstats.* from nagios@localhost;

db_scripts/diff/9733.up

@@ -0,0 +1 @@
+grant select on sipstats.* to nagios@localhost;