Fix virtualenv default version issue

use venv instead of virtualenv
default apt virtualenv pkg has issue with importlib-metadata

https: //github.com/pypa/virtualenv/commit/bb82a73b6dbf577874f6d4bfaf72d2a7f59dfffe
Change-Id: I8fb996dc831535affee4dcb0aeebdc6b70caee51
1 file changed
tree: 2607ae3b9feb7c30fa570981cf5e4acb95d65606
  1. jjb/
  2. .gitignore
  3. .gitreview
  4. .yamllint
  5. tox.ini