This is similar to I8a27bb268ea2e145ed113c652ab7846f6adc3f82
openSUSE is also suffering from the same virtualenv-tools issue so
we need to remove the existing python-2.7 symlink.
Link: https://github.com/fireteam/virtualenv-tools/issues/5
Related-Bug: #1637509
Partial-Bug: #1644629
Change-Id: I16ea455f8d9336237175e6c43f0b14713cf314d3