Fix 6052, do not recreate bundle class loader which break cache system

[tcoupin]

Related Issues

• closes Performance: Very sluggish page load when languages and all facets enabled in root dv. #6052 Performance: Very sluggish page load when languages and all facets enabled in root dv.

Before:

> for i in $(seq 10);do time curl -o /dev/null -s https://dataverse-test.ird.fr ;done
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 0% cpu 3,773 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 0% cpu 3,614 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 0% cpu 3,820 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,02s system 1% cpu 3,517 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 0% cpu 3,580 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 0% cpu 4,453 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 0% cpu 3,976 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 0% cpu 3,754 total
^C

After:

> for i in $(seq 10);do time curl -o /dev/null -s https://dataverse-test.ird.fr ;done
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,02s system 7% cpu 0,447 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 5% cpu 0,478 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 9% cpu 0,334 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 8% cpu 0,324 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,01s user 0,01s system 4% cpu 0,518 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 8% cpu 0,349 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 7% cpu 0,360 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 7% cpu 0,366 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 8% cpu 0,339 total
curl -o /dev/null -s https://dataverse-test.ird.fr  0,02s user 0,01s system 7% cpu 0,401 total

Pull Request Checklist

• Unit tests completed
• Integration tests: None
• Deployment requirements, SQL updates, Solr updates, etc.: None
• Documentation completed
• Merged latest from "develop" branch and resolved conflicts

[coveralls]

Coverage decreased (-0.0003%) to 19.562% when pulling 141aa1e on tcoupin:6052-cache-ressource-bundle into 884d73f on IQSS:develop.