Fix end-to-end value metrics tests.

- Use no_time_contraints to pull the data in PartialBucket_e2e_test.
Fast means there is no time to complete the current bucket
- One test had to be updated since the condition was unknown so the
bucket was not valid

Test: atest statsd_test
Change-Id: Id22539b801b29ed6b384045979e7c3cc6e3fe8b6