[dashpay/dash] add compressed option to `masternode genkey` (#2232)

nmarley commented on this pull request.

> @@ -145,7 +145,7 @@ UniValue masternode(const JSONRPCRequest& request)
» check — Force check all masternodes and remove invalid ones\n»
» count — Get information about number of masternodes (DEPRECATED options: ‘total’, ‘ps’, ‘enabled’, ‘qualify’, ‘all’)\n»
» current — Print info on current masternode winner to be paid the next block (calculated locally)\n»
— » genkey — Generate new masternodeprivkey\n»
+ » genkey — Generate new masternodeprivkey (optional param: boolean, optional, default=false) generate compressed privkey\n»

That works.