Add environment variables for buffer channels (observations y vaas)
Increment size of buffer channels for observations and vaas
Align k8s resources in fly
Co-authored-by: walker-16 <agpazos85@gmail.com>
* redis prefix support for caches
* fly support for prefix
* unit tests
* redis prefix for notional cache updater
* fix test
* fix tests
* use redis-prfix from config map
### Summary
Before this PR, when validating a VAA, we were always using the latest guardian set index to verify the signatures.
With this PR, we're making the signature verification against `vaa.guardianSetIndex` instead.
Context: https://github.com/wormhole-foundation/wormhole-explorer/issues/104
### Testing plan
* Added unit test cases
* Also tested manually