* Print dvc version info for debugging
fix#4095
1. seperate info from dvc version.
2. print dvc version info when some unexpected error occured.
* Psutil NoneType error
* Update tests/func/test_version.py
Co-authored-by: Ruslan Kuprieiev <[email protected]>
* Move `package` outside dvc/utils/pkg.py
Co-authored-by: Ruslan Kuprieiev <[email protected]>
