Call sudo pip /w -H diskimage-builder-install macro
Call sudo pip /w -H diskimage-builder-install macro

Without passing -H to sudo here, subsequent builders that may use pip
or tox will fail on permission issues in $HOME/.cache.

Also, this adds deboostrap to DIB's supporting packages, as it may be
required depending on what flavor disk is being built.

Change-Id: I19957cbf3b3f97660388617dd07d2010d17409e6

coolsvap/project-config,Tesora/tesora-project-config,openstack-infra/project-config,noorul/os-project-config,anbangr/osci-project-config,dongwenjuan/project-config,Tesora/tesora-project-config,coolsvap/project-config,anbangr/osci-project-config,openstack-infra/project-config,dongwenjuan/project-config,noorul/os-project-config