fix hostname in output

Author: bmx0r

bin/metrics-mysql-graphite.rb

@@ -209,7 +209,7 @@ def run
 
     # FIXME: break this up
     config[:host].split(' ').each do |mysql_host| # rubocop:disable Metrics/BlockLength
-      mysql_shorthostname = mysql_host.split('.')[0]
+      mysql_shorthostname = mysql_host.tr('.', '_')
       if config[:ini]
         ini = IniFile.load(config[:ini])
         section = ini[config[:ini_section]]

bin/metrics-mysql-processes.rb

@@ -117,7 +117,7 @@ def db_connection_creds
 
   def run
     config[:host].split(' ').each do |mysql_host|
-      mysql_shorthostname = mysql_host.split('.')[0]
+      mysql_shorthostname = mysql_host.tr('.', '_')
       db_user, db_pass = db_connection_creds
       begin
         mysql = Mysql.new(mysql_host, db_user, db_pass, nil, config[:port], config[:socket])