Add a test of v1-v3 upgrade for min comission update

[robert-zaremba]

Ref: umee-network/umee#1082

The test should:

• run a chain (in QA we already run it with few 3 validators)
• make software upgrade proposal from v1.1 -> v3.0. Use binaries from github releases (https://github.com/umee-network/umee/releases/tag/v1.1.0) and for v3 I think we need to build it in the script (this is what QA is doing in general anyway)
  make sure that one validator has comission = 0, and other has comission > 5% (let's say 10%)
• after the upgrade check that validators with comission < 5% now have comission = 5%, and others have not have not been updated.