Merge pull request #1875 from rubenk/remove-configfile-h-from-plugins

Remove configfile.h from plugins

diff --cc src/dns.c
Simple merge

diff --cc src/grpc.cc
Simple merge

diff --cc src/iptables.c
Simple merge

diff --cc src/mysql.c
Simple merge

diff --cc src/ping.c
Simple merge

diff --cc src/utils_db_query.c
Simple merge

diff --cc src/write_sensu.c
Simple merge