ansible: fix python@3.8 warnings

Closes #49083.

Signed-off-by: Alexander Bayandin <a.bayandin@gmail.com>

Formula/ansible.rb

@@ -5,6 +5,7 @@ class Ansible < Formula
   homepage "https://www.ansible.com/"
   url "https://releases.ansible.com/ansible/ansible-2.9.4.tar.gz"
   sha256 "2517bf4743d52f00d509396a41e9ce44e5bc1285bd7aa53dfe28ea02fc1a75a6"
+  revision 1
   head "https://github.com/ansible/ansible.git", :branch => "devel"
 
   bottle do
@@ -428,6 +429,12 @@ class Ansible < Formula
   resource "pycrypto" do
     url "https://files.pythonhosted.org/packages/60/db/645aa9af249f059cc3a368b118de33889219e0362141e75d4eaf6f80f163/pycrypto-2.6.1.tar.gz"
     sha256 "f2ce1e989b272cfcb677616763e0a2e7ec659effa67a88aa92b3a65528f60a3c"
+
+    # Fix warnings "SyntaxWarning: "is" with a literal. Did you mean "=="?" for python 3.8
+    patch do
+      url "https://github.com/dlitz/pycrypto/commit/4e4cc0beefbb316db2a8750e747e697df0b754d7.patch?full_index=1"
+      sha256 "f82fedee6cf73c868b55af3ab2b7d2d029b84960be0dc3baf85bb4bf541e1451"
+    end
   end
 
   resource "pyparsing" do