Container name for env data table, process name for process table

[Cerfoglg]

Additional columns for Cassandra database, see issue https://github.com/benchflow/analysers/issues/100 and pull https://github.com/benchflow/analysers/pull/101

• [x]  File: cassandra/data/benchflow.cql:L58-65
• <img border=0 src='https://avatars.githubusercontent.com/u/7163641?v=3' height=16 width=16'> Why container_name is not here too.
• <img border=0 src='https://avatars.githubusercontent.com/u/8819678?v=3' height=16 width=16'> @VincenzoFerme We are already clustering by container id, we don't need to do it by container name as well
• <img border=0 src='https://avatars.githubusercontent.com/u/7163641?v=3' height=16 width=16'> This query would be slower if you don't cluster also for container_name
• <img border=0 src='https://avatars.githubusercontent.com/u/8819678?v=3' height=16 width=16'> @VincenzoFerme We are already partitioning by trial id and experiment id, and clustering by container and host. The data are already spatially located closed to each other at this point, adding container name to it is redundant at this point, and we are just increasing the primary key size for little gain (plus, primary keys shouldn't be made too large if possible)