Merge branch 'stable-3.3' into stable-3.4
* stable-3.3:
Do not rely on System.nanoTime for E2E metrics
Introduce the apply-objects REST-API for the whole '/meta' chain
Fix the processing of an empty HTML response body from REST-API
Fix issue with ref deletion and global-refdb
Fix issue with fetching all refs after project creation
Always fallback to fetch when ApplyObject REST-API fails
Log the reason why a ref object wasn't loaded by RevisionReader
Consider any HTTP 2xx response code from REST-API as success
Return NO_CONTENT when removing a ref through ApplyObject
Introduce E2E fetch REST-API metrics
Fix ApplyObjectIT.shouldApplyRefMetaObject test for apply object
Introduce E2E apply object REST-API metrics
Add missing @Override to parseRemotes
Add more logging for the apply object REST-API
Support ApplyObject of non-commit refs
Change-Id: I721852cb091ad12c2fc94cb124b01968b0bad78d
