dependes on python3-zombie-imp

Closes: #1056481
Closes: #1058199

debian/control

@@ -9,7 +9,6 @@ Build-Depends:
  doxygen,
  pandoc,
  python3-all,
- python3-future,
  python3-intelhex,
  python3-mbed-ls,
  python3-mock,
@@ -18,6 +17,7 @@ Build-Depends:
  python3-serial,
  python3-setuptools,
  python3-six,
+ python3-zombie-imp,
 Standards-Version: 4.6.0
 Homepage: https://github.com/ARMmbed/htrun
 Vcs-Browser: https://salsa.debian.org/python-team/packages/python-mbed-host-tests
@@ -27,6 +27,7 @@ Rules-Requires-Root: no
 Package: python3-mbed-host-tests
 Architecture: all
 Depends:
+ python3-zombie-imp,
  python3-pkg-resources,
  ${misc:Depends},
  ${python3:Depends},