ci: add cleanup for leaked capacity reservations

[ryan-mist]

Fixes #N/A

Description

• add cleanup script for leaked capacity reservations from E2E tests

How was this change tested?

• manual testing

Before

ryanmist@c889f3b6ff52 clean % aws ec2 describe-capacity-reservations --query "length(CapacityReservations)" --region us-east-2 --filters Name=state,Values=active
51

Running Script

ryanmist@c889f3b6ff52 clean % go run main.go --expiration 12h
...
{"level":"info","ts":1775170622.596391,"caller":"clean/main.go:96","msg":"discovered resourceTypes","type":"CapacityReservations","ids":["cr-001d3a9fb4622fc63",...,"cr-0ff9b3a16b5fb1391"],"count":51}
{"level":"info","ts":1775170638.682019,"caller":"clean/main.go:102","msg":"deleted resourceTypes","type":"CapacityReservations","ids":["cr-001d3a9fb4622fc63",...,"cr-0ff9b3a16b5fb1391"],"count":51}
...

After

ryanmist@c889f3b6ff52 clean % aws ec2 describe-capacity-reservations --query "length(CapacityReservations)" --region us-east-2 --filters Name=state,Values=active
0

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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[joshuakguo]

LGTM 🚀

[joshuakguo]

LGTM 🚀