message: Update nMinimumChainWork and defaultAssumeValid
diff: @@ -109,10 +109,10 @@ public:
  consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
  // The best chain should have at least this much work.
  - consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000000000010000"); // qtum
  + consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000036a70ae675b98824c5"); // qtum
  // By default assume that the signatures in ancestors of this block are valid.
  - consensus.defaultAssumeValid = uint256S("0x00000000000000000013176bf8d7dfeab4e1db31dc93bc311b436e82ab226b90"); //453354
  + consensus.defaultAssumeValid = uint256S("0xbfbbfc2c3be3d4e085082aff2e4e73a4e21dbf6205bc41b84b38ffac0a8bc114"); //453354
  /**
  * The message start string is designed to be unlikely to occur in normal data.
  @@ -209,10 +209,10 @@ public:
  consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
  // The best chain should have at least this much work.
  - consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000000000010000"); // qtum
  + consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000000d6e528bcf5a3a556f"); // qtum
  // By default assume that the signatures in ancestors of this block are valid.
  - consensus.defaultAssumeValid = uint256S("0x00000000000128796ee387cf110ccb9d2f36cffaf7f73079c995377c65ac0dcc"); //1079274
  + consensus.defaultAssumeValid = uint256S("0x39ffa0c5924550db0e75030ff8513c3145d491dff2e17b8e3ea1cea7b4662ff0"); //1079274
  pchMessageStart[0] = 0x0d;
  pchMessageStart[1] = 0x22;
  