Fix: correctly convert percentage options in TOML configuration file (h…

…yperledger#5886)

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>
Signed-off-by: garyschulte <garyschulte@gmail.com>

besu/src/main/java/org/hyperledger/besu/cli/util/TomlConfigFileDefaultProvider.java

@@ -15,6 +15,7 @@
 package org.hyperledger.besu.cli.util;
 
 import org.hyperledger.besu.datatypes.Wei;
+import org.hyperledger.besu.util.number.Fraction;
 import org.hyperledger.besu.util.number.Percentage;
 
 import java.io.File;
@@ -92,6 +93,8 @@ private String getConfigurationValue(final OptionSpec optionSpec) {
       defaultValue = getNumericEntryAsString(optionSpec);
     } else if (optionSpec.type().equals(Percentage.class)) {
       defaultValue = getNumericEntryAsString(optionSpec);
+    } else if (optionSpec.type().equals(Fraction.class)) {
+      defaultValue = getNumericEntryAsString(optionSpec);
     } else { // else will be treated as String
       defaultValue = getEntryAsString(optionSpec);
     }