Synnefo

deploy: Add archipelago related packages in conf

Those packages are currently found in apt.dev unstable and in
ceph's repo. Both are added in sources.list.

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

Huuuuge snf-deploy refactor

Introduce the concept of Roles and Components.

Roles are ns, mq, db, nfs, astakos, cyclades, pithos, cms, stats,
ganeti, master, and client.

Each role consists of various SynnefoComponents which should define:

• commands to check installation prerequisites (check)...

deploy: use execute() instead of fab

This way we have a unique execution environment between
snf-deploy script and fabfile. Arguments and options
are handled way more easily. Get rid of the twisted code
that was passing command line arguments to fabric.
...

deploy: Support both wheezy and squeeze packages

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

deploy: Refactor nfs

Switch to nfs v3.
Explicitly use IP in /etc/exports and not subnet.

Subnet and gateway are only used by vlcuster and thus
move them from nodes.conf to vcluster.conf.

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

deploy: Performance tune for postgresql

Turn off fsync, synchronous_commit and full_pages_writer to speed up
postgresql. DB is not no longer crash-safe, but this is no needed for
tests.

Also, introduce 'testing_vm' setting to distinquish between the type of...

snf-deploy: Update snfdeploy/lib.py to be pep8 compliant

snf-deploy: Add option (--disable-colors) to disable color printing in terminal