Add a regression test wrapper for commands returning PartialError.
Add a regression test wrapper for commands returning PartialError.

guillaume-philippon/aquilon,quattor/aquilon,guillaume-philippon/aquilon,quattor/aquilon,stdweird/aquilon,quattor/aquilon,stdweird/aquilon,stdweird/aquilon,guillaume-philippon/aquilon