Upstream validation and enhancement improvement: (#146)

- now validation of upstream starts immediately after upstream starts - it allows it became available asap
- now we don't enrich PoS blocks which improves performance and decrease number of requests to node

src/test/groovy/io/emeraldpay/dshackle/test/ConnectorFactoryMock.groovy

@@ -23,7 +23,7 @@ class ConnectorFactoryMock implements ConnectorFactory {
         return true
     }
 
-    EthereumConnector create(DefaultUpstream upstream, EthereumUpstreamValidator validator, Chain chain)  {
+    EthereumConnector create(DefaultUpstream upstream, EthereumUpstreamValidator validator, Chain chain, boolean skipEnhance)  {
         return new EthereumConnectorMock(api, head)
     }
 }

src/test/groovy/io/emeraldpay/dshackle/test/EthereumPosRpcUpstreamMock.groovy

@@ -19,6 +19,7 @@ package io.emeraldpay.dshackle.test
 import io.emeraldpay.dshackle.Chain
 import io.emeraldpay.dshackle.config.ChainsConfig
 import io.emeraldpay.dshackle.config.UpstreamsConfig
+import io.emeraldpay.dshackle.config.UpstreamsConfig.Options
 import io.emeraldpay.dshackle.data.BlockContainer
 import io.emeraldpay.dshackle.reader.Reader
 import io.emeraldpay.dshackle.startup.QuorumForLabels
@@ -34,6 +35,7 @@ import io.emeraldpay.dshackle.upstream.rpcclient.JsonRpcResponse
 import org.jetbrains.annotations.NotNull
 import org.reactivestreams.Publisher
 
+
 class EthereumPosRpcUpstreamMock extends EthereumPosRpcUpstream {
     EthereumHeadMock ethereumHeadMock
 
@@ -68,7 +70,7 @@ class EthereumPosRpcUpstreamMock extends EthereumPosRpcUpstream {
 
     EthereumPosRpcUpstreamMock(@NotNull String id, @NotNull Chain chain, @NotNull Reader<JsonRpcRequest, JsonRpcResponse> api, CallMethods methods, Map<String, String> labels) {
         super(id, (byte)id.hashCode(), chain,
-                UpstreamsConfig.Options.getDefaults(),
+                getOpts(),
                 UpstreamsConfig.UpstreamRole.PRIMARY,
                 methods,
                 new QuorumForLabels.QuorumItem(1, UpstreamsConfig.Labels.fromMap(labels)),
@@ -80,6 +82,12 @@ class EthereumPosRpcUpstreamMock extends EthereumPosRpcUpstream {
         start()
     }
 
+    static Options getOpts() {
+        def opt = UpstreamsConfig.Options.getDefaults()
+        opt.setDisableValidation(true)
+        return opt
+    }
+
     void nextBlock(BlockContainer block) {
         this.ethereumHeadMock.nextBlock(block)
     }

src/test/groovy/io/emeraldpay/dshackle/upstream/ethereum/EthereumWsHeadSpec.groovy

@@ -56,7 +56,7 @@ class EthereumWsHeadSpec extends Specification {
 
         def ws = Mock(WsSubscriptions)
 
-        def head = new EthereumWsHead("fake", new AlwaysForkChoice(), BlockValidator.ALWAYS_VALID, apiMock, ws)
+        def head = new EthereumWsHead("fake", new AlwaysForkChoice(), BlockValidator.ALWAYS_VALID, apiMock, ws, false)
 
         when:
         def act = head.listenNewHeads().blockFirst()