Command call should log the stdout and stderr
Command call should log the stdout and stderr

Our utils.execute method did not log the stdout and stderr message
for command call, for these message, they are required for us to
track command call stdout and std error in details.

Change-Id: Ibfb15c3a004f1c2c091e59f452ebaaceeebd934d
Closes-Bug: #1242544

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