[BUG] Desactived depreciation test & add test for website builder

[mickahell]

Summary

The test depreciation test can't be used right now until the new version of qiskit isn't largely used. It come from we still used the old way to check the qiskit version of projects in order to not get the terra version. It will be able to revert this change when qiskit terra gonna totally disappeared.

Cause :

ecosystem/ecosystem/templates/configured_tox.ini

Line 32 in 0212a86

python -c 'import qiskit; f = open("./qiskit_version.txt", "w"); f.write(qiskit.__qiskit_version__["qiskit"]); f.close();'

As we want to keep the qiskit version and not the terra version we have to keep it this way for now.

Details and comments

• Update test test_tests_runner_on_simple_repo
• Add test test_website_builder

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Closes #572

[CLAassistant]

All committers have signed the CLA.

[mickahell]

@frankharkins ready for your review :)