docs: Update centos install guide wrt synnefo user

Additionally change the NFS dirs to /srv/pithos/{blocks,maps,locks}.

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
docs: Update debian install guide wrt synnefo user

In short Synnefo will run as synnefo:www-data while Archipelago as
synnefo:synnefo. The exported directories in NFS should be
root:synnefo with g+ws.

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
docs: Update upgrade notes wrt synnefo user

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
docs: Update admin guide wrt synnefo user

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
webproject: Change user in gunicorn example file

..shipped under /etc/gunicorn.d/synnefo.example.

Let gunicorn run as synnefo:synnefo

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
deploy: Workaround for snf-pithos-webclient conf

..until a proper postinst script that uses dpkg-statoverride
to modify the owners and permissions of its own conf files
is included in the package.

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
astakos: Fix oa2 settings file name

It was 20-snf-astakos-oa2-app-settings.py.
Make it 20-snf-astakos-app-oa2.conf.

This way the postinst script will find it and dpkg-statoverride
properly.

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>