opentsdb: fix CVE-2020-35476
opentsdb: fix CVE-2020-35476

This contribution pulls in the patch fixing CVE-2020-35476.
The fix is also included in the 2.4.1 version but the upgrade requires
more work: a tarball with all the third party tools is no more provided.
The build process attempts to get them during the build which fail.

https://github.com/advisories/GHSA-hv53-q76c-7f8c

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs