Conditionals: since the developer flag is no longer used by the
glance chart, it's no longer a good example. However, we want to
keep the flag around for future use if needed. So, replaced with
a foo/bar example.
gen-oslo-openstack-helm README: it referred to "this directory",
which doesn't make sense when the README is sourced into the
overall ops guide. Specified the directory explicitly.
Change-Id: I2ba02bd3efd87e58fcb701c8b7c2bb6af05994ba
cf4c6d50de