PLugin to check LDAP sync replica

Properly check if ipmi modules is supported before calling any of ipmi
tool used to get sensors value. Check if an ipmi device exists in /dev/
before executing ipmitool.

Use sudo in mh_qemu plugins.
Hard code location of "qm" executable.

Change file path in check_mk_agent.

Currently report CPU, Board and Disk.

Report UNKNOWN instead of CRITICAL when check timeout.