Upated bootstrap sauter to use existing plasma profile instead of cal…

[grmtrkngtn]

…c one

Description

Updated bootsrap_sauter to use existing plasma profile instead of recalculating a new, slightly different one.

Checklist

I confirm that I have completed the following checks:

• I have justified any large differences in the regression tests caused by this pull request in the comments.
• I have added new tests where appropriate for the changes I have made.
• If I have had to change any existing unit or integration tests, I have justified this change in the pull request comments.
• If I have made documentation changes, I have checked they render correctly.
• I have added documentation for my change, if appropriate.

[chris-ashe]

The changes no remove the need to call the plasma_profiles class to run methods internally. The value is now taken explicitly from the object properties. The default profile size of 500 now causes changes to the unit test as the original was 200, this has been updated