Docstrings for ipmitool
Docstrings for ipmitool

Cleaned up and added docstrings for some functions/methods in ipmitool.py.

Change-Id: I6cc845fe1cc24dac3c27b9efb06c009d7f0374af

ionutbalutoiu/ironic,rdo-management/ironic,varunarya10/ironic,Tan0/ironic,SauloAislan/ironic,openstack/ironic,naototty/vagrant-lxc-ironic,pshchelo/ironic,openstack/ironic,NaohiroTamura/ironic,devananda/ironic,NaohiroTamura/ironic,debayanray/ironic_backup,JioCloud/ironic,bacaldwell/ironic,bacaldwell/ironic,Tehsmash/ironic,naototty/vagrant-lxc-ironic,faizan-barmawer/openstack_ironic,froyobin/ironic,dims/ironic,hpproliant/ironic,supermari0/ironic,rackerlabs/ironic,pshchelo/ironic,ionutbalutoiu/ironic,ramineni/myironic,naterh/ironic,SauloAislan/ironic,dims/ironic,redhat-openstack/ironic