cxmanage: Add --ipmipath option
cxmanage: Add --ipmipath option

For specifying a path to ipmitool. Can be a directory or a direct
path. For example, both of these will work:

cxmanage --ipmipath /usr/bin fwinfo 192.168.100.250
cxmanage --ipmipath /usr/bin/ipmitool fwinfo 192.168.100.250

SLS-Dev/cxmanage,Cynerva/cxmanage,SilverLiningSystems/cxmanage-test,Cynerva/cxmanage,SLS-Dev/cxmanage,SilverLiningSystems/cxmanage-test,SilverLiningSystems/cxmanage-test2,SilverLiningSystems/cxmanage-test2