[GIP-72] WETH CM additional configuration

The dev team has identified some additional changes that need to be done in order to finally re-launch the new WETH CM with Curve Crypto farming:

1. Curve CRV/ETH and Convex CRV/ETH pool adapters need to be forbidden to avoid borrowed funds going into these pools. While LT=0 should prevent any borrowing against these pools' LP tokens, we want to completely remove any possible attack vectors.
2. LT = 0 and ZeroPriceFeed's will be set for cvxcrvCRVETH, stkcvxcrvCRVETH, in addition to the Curve token
3. Without the old CRV pool, the users wouldn't have any option to swap their reward CRV into the underlying WETH, since the new CM doesn't support Uniswap. Therefore, we need to add an adapter for the new TriCRV pool to the new WETH CM. This pool will only support swaps - there is currently no readily available price feed for crvUSD, so the LP token can't be safely priced. The LP token itself will also be added (this is needed for compatibility), but will have LT=0 and ZeroPriceFeed set for it.