fix single-node script (#3169)

contrib/single-node.sh

@@ -7,21 +7,22 @@ CHAINID="test-gaia"
 USER_COINS="100000000000stake"
 STAKE="100000000stake"
 MONIKER="gaia-test-node"
+GAIAD="gaiad"
 
 
 echo "Using home dir: $HOME_DIR"
-gaiad init --chain-id $CHAINID $MONIKER --home "$HOME_DIR/.gaia"
+rm -rf $HOME_DIR/.gaia
+$GAIAD init --chain-id $CHAINID $MONIKER --home "$HOME_DIR/.gaia"
 
 echo "Setting up genesis file"
 jq ".app_state.gov.params.voting_period = \"20s\" | .app_state.gov.params.expedited_voting_period = \"10s\" | .app_state.staking.params.unbonding_time = \"86400s\"" \
-   "${HOME_DIR}/gaia/config/genesis.json" > \
-   "${HOME_DIR}/edited_genesis.json" && mv "${HOME_DIR}/edited_genesis.json" "${HOME_DIR}/config/genesis.json"
+   "${HOME_DIR}/.gaia/config/genesis.json" > \
+   "${HOME_DIR}/edited_genesis.json" && mv "${HOME_DIR}/edited_genesis.json" "${HOME_DIR}/.gaia/config/genesis.json"
 
-
-gaiad keys add validator --keyring-backend="test"
-gaiad genesis add-genesis-account $(gaiad keys show validator -a --keyring-backend="test") $USER_COINS
-gaiad genesis gentx validator $STAKE --keyring-backend="test" --chain-id $CHAINID
-gaiad genesis collect-gentxs
+$GAIAD keys add validator --keyring-backend="test"
+$GAIAD genesis add-genesis-account $("${GAIAD}" keys show validator -a --keyring-backend="test") $USER_COINS
+$GAIAD genesis gentx validator $STAKE --keyring-backend="test" --chain-id $CHAINID
+$GAIAD genesis collect-gentxs
 
 # Set proper defaults and change ports
 echo "Setting up node configs"
@@ -33,4 +34,4 @@ sed -i -r 's/index_all_keys = false/index_all_keys = true/g' ~/.gaia/config/conf
 sed -i -r 's/minimum-gas-prices = ""/minimum-gas-prices = "0stake"/g' ~/.gaia/config/app.toml
 
 # Start the gaia
-gaiad start --api.enable=true
+$GAIAD start --api.enable=true