WIP: docfix: p9 can connect to esarchive but not to ws

Hi @aho!

Developing the examples, we found some improvements to do in the guide.

One is it included in this branch:

• P9 cannot connect WS home's, so, ecflow_suite_dir = '/home/Earth/nperez/ this is wrong, this is correct ecflow_suite_dir = '/esarchive/scratch/nperez/'
• In the section: 'the cluster components and options are explained next:' from the guide could include also parameter 'CDO_module'
• A warning like Warning: rsync from remote server to collect results failed. Retrying soon. appears when submitting to P9, parameter temp_dir hasn't been defined
• As we have already solved the problem of 'mixing dimensions', the definition in the cluster parameter lib_dir is not necessary to submit to P9, so we can remove it from the example. It is still being a very useful parameter when we (as maintainers) need to test concrete libraries and versions in a remote cluster.

This are the changes I have detected. Please, let me know if you have detected other problems.

Thanks,

Núria