Develop is broken

The following jobs are failing on CI with the develop branch:

• centos-xdk-build
• ubuntu-xdk-build-doc
• ubuntu-xdk-qa-code-coverage

See pipeline 2684 (https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/pipelines/2684)

I triggered this pipeline manually, because the CI of the branch release-7.0 were failing (created from develop), even with almost no changes (update OTB version, update release notes)

The previous develop pipeline https://gitlab.orfeo-toolbox.org/orfeotoolbox/otb/pipelines/2672 (triggered by the merge of !596 (merged)) was successful, and there has been no change since.