tests/auto/network: Replace Q[TRY]_VERIFY(a == b) by Q[TRY]_COMPARE(a, b).

- Replace Q[TRY]_VERIFY(pointer == 0) by Q[TRY]_VERIFY(!pointer).
- Replace Q[TRY]_VERIFY(smartPointer == 0)  by
          Q[TRY]_VERIFY(smartPointer.isNull()).
- Replace Q[TRY]_VERIFY(a == b) by  Q[TRY]_COMPARE(a, b) and
  add casts where necessary. The values will then be logged
  should a test fail.

Change-Id: Icaa1edafcc6e2779fbd6dbc2c058544d6e07f1e9
Reviewed-by: Richard J. Moore <rich@kde.org>