ROQ scaling issue

  File "/home/emfollow-playground/.local/bin/bilby_pipe_generation", line 8, in <module>
    sys.exit(main())
  File "/home/emfollow-playground/.local/lib/python3.7/site-packages/bilby_pipe/data_generation.py", line 1080, in main
    data.save_roq_weights()
  File "/home/emfollow-playground/.local/lib/python3.7/site-packages/bilby_pipe/data_generation.py", line 1054, in save_roq_weights
    quadratic_matrix=basis_matrix_quadratic,
  File "/home/emfollow-playground/.local/lib/python3.7/site-packages/bilby/gw/likelihood.py", line 890, in __init__
    quadratic_matrix=quadratic_matrix)
  File "/home/emfollow-playground/.local/lib/python3.7/site-packages/bilby/gw/likelihood.py", line 1079, in _set_weights
    self.perform_roq_params_check(ifo)
  File "/home/emfollow-playground/.local/lib/python3.7/site-packages/bilby/gw/likelihood.py", line 1022, in perform_roq_params_check
    .format(ifo.minimum_frequency, roq_params['flow']))
bilby.gw.likelihood.BilbyROQParamsRangeError: Requested minimum frequency 40.0 lower than ROQ basis flow 80.0

Unfortunately, this issue has not been resolved by !244 (merged) and !253 (merged), perhaps the issue is in bilby rather than bilby_pipe

@colm.talbot @gregory.ashton