Pipelines date filtering fix

The server pipelines get method has possibility to filter entries based on the date range. When user adds values dt_from and dt_to the date dt_from was included in the results, but the dt_to was excluded from the results. This PR includes the dt_to to the results as well. So if the user asks for pipelines from 2022-08-10 to 2022-08-11 the server will also provide pipelines created at 2022-08-11.

Signed-off-by: Jan Richter jarichte@redhat.com