Fix MockedDriverContextFactory for LWT routing method mock

The DefaultLoadBalancingPolicy constructor reads
LOAD_BALANCING_DEFAULT_LWT_REQUEST_ROUTING_METHOD which was missing
from the mocked profile, causing NPE in StartupOptionsBuilderTest.

Author: dkropachev

core/src/test/java/com/datastax/oss/driver/internal/core/context/MockedDriverContextFactory.java

@@ -119,6 +119,9 @@ public static DriverExecutionProfile createProfile(String name, String localDc)
         .thenReturn("DefaultMetricsFactory");
     when(defaultProfile.getString(DefaultDriverOption.LOAD_BALANCING_LOCAL_DATACENTER))
         .thenReturn(localDc);
+    when(defaultProfile.getString(
+            DefaultDriverOption.LOAD_BALANCING_DEFAULT_LWT_REQUEST_ROUTING_METHOD))
+        .thenReturn("REGULAR");
     return defaultProfile;
   }
 

core/src/test/java/com/datastax/oss/driver/internal/core/context/StartupOptionsBuilderTest.java

@@ -42,6 +42,9 @@ private DefaultDriverContext buildMockedContext(String compression) {
     when(defaultProfile.getString(DefaultDriverOption.PROTOCOL_COMPRESSION, "none"))
         .thenReturn(compression);
     when(defaultProfile.getName()).thenReturn(DriverExecutionProfile.DEFAULT_NAME);
+    when(defaultProfile.getString(
+            DefaultDriverOption.LOAD_BALANCING_DEFAULT_LWT_REQUEST_ROUTING_METHOD))
+        .thenReturn("REGULAR");
     return MockedDriverContextFactory.defaultDriverContext(defaultProfile);
   }