bilby_pipe/data_generation.py, input.py, parser.py: To be compatible with...

This MR implements workflow of using .hdf5 multiple/multibanded ROQ bases, which has been implemented in bilby!1093 (merged). The changes are summarized below:

• There are no changes for the standard ROQ workflow using roq-folder.
• A user can use .hdf5 basis through linear-matrix and quadratic-matrix. The file format of weights is set to hdf5 for this case, as npz is not compatible with the use of multiple bases.

I did two end-to-end test runs with this change:

• A test run using .npy bases through roq-folder https://ldas-jobs.ligo.caltech.edu/~soichiro.morisaki/test_multiple_roq/test_npy/pe_test_mr/
• A test run using .hdf5 bases through linear-matrix and quadratic-matrix https://ldas-jobs.ligo.caltech.edu/~soichiro.morisaki/test_multiple_roq/test_bilby_pipe/pe/