Adding pythonPackags.pandas to binary cache. Python packages are not part of nixpkgs/nixos jobsets in 16.03+ since ccd1029f58. Until it gets added again, adding some python packages that take really long to build.

(cherry picked from commit 713c24056397fef46717d2f0eae1940f348941e6)

Changed files
+3 -1
pkgs
top-level
+3 -1
pkgs/top-level/release.nix
···
perlPackages = { };
-
pythonPackages = { };
+
pythonPackages = {
+
pandas = unix;
+
};
python2Packages = { };
python27Packages = { };
python3Packages = { };