Various fixes & improvements
- ci: Check health of services after running integration tests and fix snuba-replacer (#1897) by @ethanhs
- Add wal2json debugging (#1906) by @chadwhitacre
- Pick up CI bugfix (#1905) by @chadwhitacre
- ref: Move jq build to error-handling.sh, and use proxy config (#1895) by @ethanhs
- fix(CI): use default curl retry mechanism for wal2json install (#1890) by @volokluev
- ref: Retry wal2json download in installer (#1881) by @ethanhs
- ci: Remove GCB and update Github Action SHA (#1880) by @ethanhs