Add double to ipmi::Value type
Add double to ipmi::Value type

ipmi::Value is used as the type in setDbusProperty. As
properties are allowed to be doubles, add it to the type.

Change-Id: I3d2dd5063100b8e73732740ce056fc476a7e1e44
Signed-off-by: James Feist <9f787ca2e294231a0bf80dc589f168b98eea7133@linux.intel.com>

openbmc/phosphor-host-ipmid,openbmc/phosphor-host-ipmid,openbmc/phosphor-host-ipmid