Revert "Try changing ElasticClient to not be singleton."
Revert "Try changing ElasticClient to not be singleton."

This reverts commit 7c6e7e3739b0d295d6ac96ad606da5d53223fd7d.

exceptionless/Exceptionless,exceptionless/Exceptionless,exceptionless/Exceptionless,adamzolotarev/Exceptionless,exceptionless/Exceptionless,adamzolotarev/Exceptionless,adamzolotarev/Exceptionless