Make the bill end date inclusive instead of exclusive

Before the end date for the billing was used to calculate startOfDay
to generate the timestamp we actually use.  Now we are changing it
to .plusDays(1).startOfDay to make it so UI will effectively use
the end of today as the timestamp.

Also added some more implementations to ManualClock to get some
tests to work.

1 files changed, 2 insertions, 2 deletions

diff --git a/testutil/src/main/java/com/yahoo/test/ManualClock.java b/testutil/src/main/java/com/yahoo/test/ManualClock.java
index e49c7df3882..ce3ae6d77df 100644
--- a/testutil/src/main/java/com/yahoo/test/ManualClock.java
+++ b/testutil/src/main/java/com/yahoo/test/ManualClock.java
@@ -48,10 +48,10 @@ public class ManualClock extends Clock {
     public Instant instant() { return currentTime.get(); }
 
     @Override
-    public ZoneId getZone() { return null; }
+    public ZoneId getZone() { return ZoneOffset.UTC; }
 
     @Override
-    public Clock withZone(ZoneId zone) { return null; }
+    public Clock withZone(ZoneId zone) { return this; }
 
     @Override
     public long millis() { return instant().toEpochMilli(); }