add integer as valid type to groups

[michael-boehm]

Description of change

• add integer as valid type to groups
• fixes Error integrating group table #37
• reason: The field auto_ticket_assign takes on boolean AND integer values (example from the API: "auto_ticket_assign":false or "auto_ticket_assign":2), because Freshdesk uses a checkbox AND radio buttons for it, see here.

Manual QA steps

• none

Risks

• should be none(?)

Rollback steps

• revert this branch

[cmerrick]

Hi @michael-boehm, thanks for your contribution!

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[cmerrick]

You did it @michael-boehm!

Thank you for signing the Singer Contribution License Agreement.

[cosimon]

This has been merged as part of #42. There is a subtle potential bug in this schema change where a record with an auto_ticket_assign value of 0 could be coerced to false because boolean is listed first in the schema. #42 swapped the ordering so that should not be an issue.