Fix glance-remote with global venv

The base systemd unit file setup now writes an Environment= line to
the file for the venv. The glance-remote code was setting that to
point at the alternate config location, using iniset which was
clobbering the venv one. Switch to iniadd to fix.

Also, we need to explicitly put the --venv flag into the command since
we write our unit file ourselves. This probably needs a cleanup at
this point, but since the glance gate is blocked, do this for now.

Change-Id: I2bd33de45c41b18ed7d4270a7301b1e322134987
1 file changed