Jenkins Git plugin tagging with 5.4.1

Jenkins Git plugin tagging with 5.4.0

[dev] Add an Agent Developer Mode for collecting fine-grained perform…

…ance metrics

Jenkins Git plugin tagging with 5.3.2

Merge pull request DataDog#1572 from DataDog/yann/cherry-pick-update-531

[skip ci] 5.3.1 release

5.3.0 release

Normal point release, stats:
214 files changed, 14250 insertions(+), 7856 deletions(-)

Release 5.2.3 for Windows.

This is to fix a regression in the vSphere check.

[changelog] Final update for 5.2.1 release

[skip ci]

[changelog] add etcd for 5.2.1 release