ansible, ansible_2_10: internalize collections package

This drops the python3Packages.ansible-collections attribute in favor of
a local callPackage that overwrites the collections package per ansible
version.

(cherry picked from commit ca618d6401631cf2c82c81220c54e774b514297f)

pkgs/development/python-modules/ansible/core.nix

@@ -1,8 +1,8 @@
 { lib
+, callPackage
 , buildPythonPackage
 , fetchPypi
 , installShellFiles
-, ansible-collections
 , cryptography
 , jinja2
 , junit-xml
@@ -21,6 +21,12 @@
 , xmltodict
 }:
 
+let
+  ansible-collections = callPackage ./collections.nix {
+    version = "4.1.0";
+    sha256 = "0rrivq1g0vizah8zmf012lzig2xxfk5x1371k16s3nn4zfkwqqgm";
+  };
+in
 buildPythonPackage rec {
   pname = "ansible-core";
   version = "2.11.2";
@@ -74,6 +80,10 @@ buildPythonPackage rec {
   # internal import errors, missing dependencies
   doCheck = false;
 
+  passthru = {
+    collections = ansible-collections;
+  };
+
   meta = with lib; {
     description = "Radically simple IT automation";
     homepage = "https://www.ansible.com";