fix bootstrap script for environment where 'python' is Python 3.x

[boegel]

No description provided.

[hpcugentbot]

EasyBuild framework unit test suite FAILed.

See https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2841/console for more details.

Please fix the reported issues by pushing additional commits to the branch corresponding with this pull request; contact @boegel if you're not sure what to do.

[boegel]

Jenkins: test this please

[hpcugentbot]

EasyBuild framework unit test suite FAILed.

See https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2842/console for more details.

Please fix the reported issues by pushing additional commits to the branch corresponding with this pull request; contact @boegel if you're not sure what to do.

[hpcugentbot]

EasyBuild framework unit test suite FAILed.

See https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2843/console for more details.

Please fix the reported issues by pushing additional commits to the branch corresponding with this pull request; contact @boegel if you're not sure what to do.

[hpcugentbot]

EasyBuild framework unit test suite FAILed.

See https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2844/console for more details.

Please fix the reported issues by pushing additional commits to the branch corresponding with this pull request; contact @boegel if you're not sure what to do.

[boegel]

Jenkins: test this please

[boegel]

@wpoely86: please review (successful test report coming up, I enhanced the PR tester to also check the bootstrap under python2.7)

[wpoely86]

👍

[hpcugentbot]

EasyBuild framework unit test suite PASSed (see https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2845/console for more details).

This pull request is now ready for review/testing.

Please try and find someone who can tackle this; contact @boegel if you're not sure what to do.

[boegel]

Going in, thanks @wpoely86!