CORE-257: In Core Ethereum, always return BRD and LCL nodes to 'available' when disconnecting.  Also, only reject a node if both ETH protocols 62 and 63 (not 'or') are missing.
CORE-257: In Core Ethereum, always return BRD and LCL nodes to 'available' when disconnecting.  Also, only reject a node if both ETH protocols 62 and 63 (not 'or') are missing.

breadwallet/breadwallet-core,breadwallet/breadwallet-core,breadwallet/breadwallet-core,breadwallet/breadwallet-core,breadwallet/breadwallet-core,breadwallet/breadwallet-core