add disable-bound-validation option (#675)

* add disable-bound-validation option

* fix test

src/main/kotlin/io/emeraldpay/dshackle/upstream/generic/GenericUpstream.kt

@@ -343,7 +343,9 @@ open class GenericUpstream(
         }
         detectSettings()
 
-        detectLowerBlock()
+        if (!getOptions().disableBoundValidation) {
+            detectLowerBlock()
+        }
 
         detectFinalization()
     }

src/test/groovy/io/emeraldpay/dshackle/config/UpstreamsConfigReaderSpec.groovy

@@ -636,7 +636,7 @@ class UpstreamsConfigReaderSpec extends Specification {
         def options = partialOptions.buildOptions()
         then:
         options == new ChainOptions.Options(
-                false, false, 30, Duration.ofSeconds(60), null, true, 1, true, true, true, true, 1_000_000, false
+                false, false, 30, Duration.ofSeconds(60), null, true, 1, true, true, true, true, 1_000_000, false, false
         )
     }
 }