[SVCS-499] Adding size_as_int property to BaseFileMetadata

[TomBaxter]

Ticket

SVCS-499

Purpose

Some provider metadata returns size as a string, not an int. Add a property that returns size as an int.

Changes

Added size_as_int field to BaseFileMetadata.
Added explicit metadata tests for the new property

Side effects

None

QA Notes

This change is very minimal and should require little QA. It should be most notable in the tests for now.

Deployment Notes

None

[coveralls]

Coverage increased (+0.01%) to 89.922% when pulling b235eb1 on TomBaxter:feature/SVCS-499 into 1b60f40 on CenterForOpenScience:develop.

[cslzchen]

Loves the elegant try ... except ... that handles different cases. LGTM and move to PCR. 🎆 🎆

• There is no usage though. I guess we will update related providers after this is done.