Add lalsuite ad a dependency

At the moment, adding lalsuite breaks the CI. This needs to be fixed and lalsuite added back to the dependency list.

So I've been hacking at this in the last day and it's a real pain. The core issue seems to me that the version of pip on the CI is from 2014. It's unclear how to install your own version of pip without installing a python installation first (which seems like overkill). One immediate option is:

• Just hack the requirements in the CI build to remove lalsuite

However, this is obviously hacky and stupid.

mentioned in merge request !60 (merged)

closed via merge request !60 (merged)

closed via commit 81344c54

mentioned in commit 81344c54

unassigned @gregory.ashton