Accept "1" as true for boolean properties

internal-api/src/main/java/datadog/trace/bootstrap/config/provider/ConfigConverter.java

@@ -174,12 +174,28 @@ static BitSet parseIntegerRangeSet(@Nonnull String str, final String settingName
     return set;
   }
 
+  public static Boolean booleanValueOf(String value) {
+    if ("1".equals(value)) {
+      return Boolean.TRUE;
+    } else {
+      return Boolean.valueOf(value);
+    }
+  }
+
   private static class ValueOfLookup extends ClassValue<MethodHandle> {
     private static final MethodHandles.Lookup PUBLIC_LOOKUP = MethodHandles.publicLookup();
 
     @Override
     protected MethodHandle computeValue(Class<?> type) {
       try {
+        if (Boolean.class.equals(type)) {
+          return MethodHandles.lookup()
+              .findStatic(
+                  ConfigConverter.class,
+                  "booleanValueOf",
+                  MethodType.methodType(Boolean.class, String.class));
+        }
+
         return PUBLIC_LOOKUP.findStatic(type, "valueOf", MethodType.methodType(type, String.class));
       } catch (final NoSuchMethodException | IllegalAccessException e) {
         log.debug("Can't invoke or access 'valueOf': ", e);

internal-api/src/test/groovy/datadog/trace/bootstrap/config/provider/ConfigConverterTest.groovy

@@ -0,0 +1,25 @@
+package datadog.trace.bootstrap.config.provider
+
+import datadog.trace.test.util.DDSpecification
+
+class ConfigConverterTest extends DDSpecification {
+
+  def "Convert boolean properties"() {
+    when:
+    def value = ConfigConverter.valueOf(stringValue, Boolean.class)
+
+    then:
+    value == expectedConvertedValue
+
+    where:
+    stringValue | expectedConvertedValue
+    "true"      | true
+    "TRUE"      | true
+    "True"      | true
+    "1"         | true
+    "false"     | false
+    null        | null
+    ""          | null
+    "0"         | false
+  }
+}