nuxeoctl mp-hotfix must not uninstall other packages

$ ./bin/nuxeoctl mp-set nuxeo-drive-1.4.1
$ ./bin/nuxeoctl mp-list
Local packages:
 addon     started	nuxeo-drive (id: nuxeo-drive-1.4.1)

$ ./bin/nuxeoctl mp-hotfix
Dependency resolution:
  Installation order (4):        nuxeo-6.0-HF01-1.0.0/nuxeo-6.0-HF02-1.0.0/nuxeo-6.0-HF03-1.0.0/nuxeo-drive-1.4.2
  Packages to upgrade (1):       nuxeo-drive:1.4.1
  Packages to download (4):      nuxeo-6.0-HF03:1.0.0, nuxeo-6.0-HF02:1.0.0, nuxeo-drive:1.4.2, nuxeo-6.0-HF01:1.0.0

Downloading [nuxeo-6.0-HF03-1.0.0, nuxeo-drive-1.4.2, nuxeo-6.0-HF02-1.0.0, nuxeo-6.0-HF01-1.0.0]...
Added nuxeo-6.0-HF03-1.0.0
Added nuxeo-drive-1.4.2
Added nuxeo-6.0-HF02-1.0.0
Added nuxeo-6.0-HF01-1.0.0
Uninstalling nuxeo-drive-1.4.1
Installing nuxeo-6.0-HF01-1.0.0

Dependency resolution:
  Installation order (2):        nuxeo-6.0-HF02-1.0.0/nuxeo-6.0-HF03-1.0.0
  Unchanged packages (1):        nuxeo-6.0-HF01:1.0.0
  Local packages to install (2): nuxeo-6.0-HF03:1.0.0, nuxeo-6.0-HF02:1.0.0
Installing nuxeo-6.0-HF02-1.0.0
Installing nuxeo-6.0-HF03-1.0.0

$ ./bin/nuxeoctl mp-list
Local packages:
hotfix     started	nuxeo-6.0-HF01 (id: nuxeo-6.0-HF01-1.0.0)
hotfix     started	nuxeo-6.0-HF02 (id: nuxeo-6.0-HF02-1.0.0)
hotfix     started	nuxeo-6.0-HF03 (id: nuxeo-6.0-HF03-1.0.0)
 addon  downloaded	nuxeo-drive (id: nuxeo-drive-1.4.1)
 addon  downloaded	nuxeo-drive (id: nuxeo-drive-1.4.2)