remove pycache directory during upgrades (#959)

* remove pycache directory during upgrades

This PR removes /opt/datadog-agent/python-scripts/__pycache__ similarly to other installation methods.

* empty commit for testing

---------

Co-authored-by: Levan Machablishvili <levan.machablishvili@datadoghq.com>
Co-authored-by: levan-m <116471169+levan-m@users.noreply.github.com>

Author: arbll

recipes/_install-linux.rb

@@ -28,6 +28,17 @@
 package_retries = node['datadog']['agent_package_retries']
 package_retry_delay = node['datadog']['agent_package_retry_delay']
 
+# Remove Python bytecode cache dir prior to installing/upgrading Agent (Linux only)
+directory '/opt/datadog-agent/python-scripts/__pycache__' do
+  action :delete
+  recursive true
+  ignore_failure true
+  only_if do
+    platform_family?('debian', 'rhel', 'fedora', 'amazon', 'suse') &&
+      ![:remove, :purge].include?((package_action.is_a?(Symbol) ? package_action : package_action.to_sym))
+  end
+end
+
 # Install the regular package
 case node['platform_family']
 when 'debian'