Fixes: #2551.
Tests:
- In a VM visit the storage page. Without the patch, an exception is logged when
there is no space to expand the partition. With the patch, the exception is not
logged.
- Raise an exception in the storage.usage_info() method and notice that the
exception is logged when visiting the Storage app page.
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
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