Pin glance to working py2 commit
Pin glance to working py2 commit

Glance do not build with python2 post [1] as cyclic
dep in glance.common.utils and glance.common.wsgi, so let's
pin it to get repo consistent.

[1] https://review.opendev.org/#/c/705526

Change-Id: I5f9bc401b5717c2a98936235d1cebc462a6bb2b1

redhat-openstack/rdoinfo