qipy: fix error message when bootstrap has not been called yet
qipy: fix error message when bootstrap has not been called yet

Change-Id: Ie65ae9f0a3e9ac537aadec2150b8a00028110367

dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild