Cosmovisor v1.2 can't find the upgrade folder if plan name contains capital letters

[RaulBernal]

Summary of Bug

When a new upgrade happens Cosmovisor can't find the proper folder path if plan name (upgrade name) contains capital letters.
In example, we perform the upgrade with plan name "strangeBuddheads" and Cosmovisor was looking for "strangebuddheads".

Aug 11 19:10:31 seed1.bitcanna.io cosmovisor[109539]: Error: binary not present, downloading disabled: cannot stat dir /home/raul/.bcna/cosmovisor/upgrades/strangebuddheads/bin/bcnad: stat /home/raul/.bcna/cosmovisor/upgrades/strangebuddheads/bin/bcnad: no such file or directory
Aug 11 19:10:31 seed1.bitcanna.io cosmovisor[109539]: 7:10PM ERR error="binary not present, downloading disabled: cannot stat dir /home/raul/.bcna/cosmovisor/upgrades/strangebuddheads/bin/bcnad: stat /home/raul/.bcna/cosmovisor/upgrades/strangebuddheads/bin/bcnad: no such file or directory" module=cosmovisor 

While the plan name was "strangeBuddheads"

2:24PM INF ABCI Replay Blocks appHeight=4490419 module=consensus stateHeight=4490419 storeHeight=4490420
2:24PM INF Replay last block using real app module=consensus
2:24PM INF applying upgrade "strangeBuddheads" at height: 4490420
2:24PM INF adding a new module: authz
2:24PM INF minted coins from module account amount=4465309ubcna from=mint module=x/bank

Version

v1.2

Steps to Reproduce

1. Send a proposal for to upgrade the network. Name the plan "strangeBuddheads" or any other that contains capital letters.
2. Setup the folders for cosmovisor and the binary
3. Wait for the upgrade and check if Cosmovisor looks in the proper folder path.

[julienrbrt]

As per comment in #12918, this is an expected behavior, #12921 will add documentation.