fix : port and channel for deriving ics rewards denom trace

[ajansari95]

1. Summary

Fixes # (issue)

• need to use destination channel and port

2.Type of change

• Bug fix (non-breaking change which fixes an issue)

3. Implementation details

4. How to test/use

5. Checklist

• Does the Readme need to be updated?

6. Limitations (optional)

7. Future Work (optional)

[muku314115]

seems like some ibc_packet_handlers tests are also failing

[joe-bowman]

These tests are failing for the same reason (they use MsgTransfer; might be easier to switch them to something else)

There is also a fmt.Println() somewhere; the tests are echoing out the denom.

[joe-bowman]

lgtm

[codecov-commenter]

Codecov Report

Merging #489 (b5ac7fa) into develop (e2ae3c7) will decrease coverage by 0.02%.
The diff coverage is 33.33%.

@@             Coverage Diff             @@
##           develop     #489      +/-   ##
===========================================
- Coverage    55.55%   55.54%   -0.02%     
===========================================
  Files          169      169              
  Lines        13096    13101       +5     
===========================================
+ Hits          7276     7277       +1     
- Misses        5242     5245       +3     
- Partials       578      579       +1     

Flag	Coverage Δ
unittests	55.54% <33.33%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
x/interchainstaking/keeper/ibc_packet_handlers.go	40.40% <33.33%> (-0.11%)	⬇️