chore: refactor .store_fallback_token, and ignore exceptions raised by .store_fallback_token.

[rwiker]

chore: refactor .store_fallback_token, and ignore exceptions raised by .store_fallback_token.

Issue

N/A

Description

N/A

How to test

At this moment, the preview environment for sumo-core has the endpoint /createfallbackauth, while prod does not.

Running the following python script should cause no exceptions, and give a fallback token named 88d2b022-3539-4dda-9e66-853801334a86+fallback.sharedkey in ~/.sumo:

from sumo.wrapper import SumoClient
scd = SumoClient("preview")
scp = SumoClient("prod")

Checklist

• No redundant `print()` statements, commented-out code, or other remnants from the development 👀
• New/refactored code is following same conventions as the rest of the code base 🧬
• New/refactored code is tested ⚙
• Documentation has been updated 🧾
• Commits are semantic ✅