Minor refactoring in shell.py
Minor refactoring in shell.py
bincentvaret/bsd-cloudinit,pellaeon/bsd-cloudinit,CropCircleSys/bsd-cloudinit,stefan-caraiman/cloudbase-init,ader1990/cloudbase-init,pellaeon/bsd-cloudinit,alexpilotti/cloudbase-init,cmin764/cloudbase-init,whiteear/cloudbase-init,telerik/cloudbase-init,openstack/cloudbase-init,stackforge/cloudbase-init,chialiang-8/cloudbase-init