Add support for triggering builds on Jenkins from the new frontend

Slots to be built (from the "Start slots" view) are prepared an added to the database with a special flag telling that they have to be built.

The Jenkins job https://jenkins-lhcb-nightlies.web.cern.ch/job/nightly-builds/job/new-slots-build-poll/ regularly (currently every 2 minutes) checks if there are new slots to build (using the result of a CouchDB view). If so, the special flag is removed and we trigger a checkout job (entry point to trigger the whole build in Jenkins).

I added a placeholder function that can be used to dispatch the slots to the new or the legacy system. For the moment it only uses the legacy one.

Closes #37 (closed)

added 3 commits

• 3f0e86ff - Allow credentials in LEGACY_COUCHDB_URL
• 2a8f3355 - Fix issue with started slot ignoring the requested flavour
• 852b5c54 - Modify start_slots to add new slots to the legacy DB

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added 2 commits

• 270de1dc - Factor out the installation of a local venv to run utils
• 661c07be - Add Jenkins scripts to trigger pending builds

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added 2 commits

• 193cd042 - Add visual feedback for slots waiting build trigger
• d51ae35b - Set the to_build flag when using the legacy build system

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added 1 commit

• 62d9ea9c - Use a view instead of a Mango query

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marked this merge request as ready

changed title from Draft: Resolve "Add support for triggering builds on Jenkins from the new frontend" to Add support for triggering builds on Jenkins from the new frontend

changed the description

resolved all threads

mentioned in issue #38 (closed)

mentioned in commit cc851351

merged

added frontend v2 label

mentioned in merge request !93 (merged)

mentioned in issue #44