[507157] Check usage of InputStreams with mockito

- Provide IStreamProviders interface to create new input streams
- Provide interface implementations for usage
- Adapt mocking of IStorage to create new stream instances on each call

Change-Id: I37d2202a0067a7ae9de4f02e933b02c73b5c13b0
Also-by: Tobias Ortmayr <tobias.ortmayr@gmail.com>
Signed-off-by: Martin Fleck <mfleck@eclipsesource.com>
14 files changed