Reduce high Tendermint fees

[smk762]

Solves https://github.com/KomodoPlatform/komodo-wallet-desktop/issues/2371 until an API level solution is available. To Test:

• try sending Tendermint assets (ATOM, IRIS, OSMO, ATOM-IRIS_IBC) without custom fee.
• try sending Tendermint assets (ATOM, IRIS, OSMO, ATOM-IRIS_IBC) with custom fee.

IRIS seemed to be the first to reject the tx when static fee was reduced further. The following values should work for custom fees for all Tendermint coins:

• gas_price: 0.05
• gas_limit: 150000