rename all modified templates with iml_ prefix

ceph.ini

file_age.ini

fping.ini

icinga.ini

icmp.ini

iml_apache-requests.ini

iml_ceph-diskfree.ini

iml_cpu.ini

iml_default.ini

iml_disk-io.ini

iml_disk-ticks.ini

iml_disk.ini

iml_eol.ini

iml_haproxy-status.ini

iml_hostalive.ini

iml_load.ini

iml_memory.ini

iml_mysqlserver-commands.ini

iml_mysqlserver-connections.ini

iml_mysqlserver-connects.ini