Add Stack Monitoring usage reporting (elastic#4708) (elastic#4711)

Report EnterpriseSearch memory usage (elastic#4499) (elastic#4503)

[1.5] Release notes and highlights for 1.5.0 (elastic#4313) (elastic#…

…4351)

Update version to 1.4.1 (elastic#4293)

Adjust init container script for Elastic License 2.0 (elastic#4191) (e…

…lastic#4200)

Update VERSION to 1.3.2 (elastic#4206)

Update VERSION to 1.2.2 (elastic#4207)

Merge branch '1.3' into 1.3.1

Update golang Docker tag to v1.15.4 (elastic#3920) (elastic#3925)

Co-authored-by: Renovate Bot <[email protected]>
# Conflicts:
#	.ci/Dockerfile
#	Dockerfile
#	hack/manifest-gen/Dockerfile

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Update 1.2.1 release notes (elastic#3601) (elastic#3603)