store/v2 and iavl v1 must support the creation of state at version 0 to support server/v2 style genesis

[kocubinski]

Problem

simapp/v2 will only start at block 2, starting at block 1 fails.

Completion criteria

Applying this patch and running scripts/simapp-v2-init.sh returns 0:

diff --git a/scripts/simapp-v2-init.sh b/scripts/simapp-v2-init.sh
index 6bdb51de7b..e391fb1cad 100755
--- a/scripts/simapp-v2-init.sh
+++ b/scripts/simapp-v2-init.sh
@@ -26,7 +26,7 @@ jq '.app_state.gov.voting_params.voting_period = "600s"' genesis.json > temp.jso
 jq '.app_state.mint.minter.inflation = "0.300000000000000000"' genesis.json > temp.json && mv temp.json genesis.json

 # change the initial height to 2 to work around store/v2 and iavl limitations with a genesis block
-jq '.initial_height = 2' genesis.json > temp.json && mv temp.json genesis.json
+# jq '.initial_height = 2' genesis.json > temp.json && mv temp.json genesis.json