cloudstack: Cannot install cloudstack-marvin 4.15.0.0 on Ubuntu 20.04

see output below

root@mgt2004:~# apt install cloudstack-marvin
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 cloudstack-marvin : Depends: python-pip but it is not installable
E: Unable to correct problems, you have held broken packages.

it is because that there is no python2 pip on ubuntu 20.04 any more. hence marvin cannot be installed, and integration test cannot be handled.

ISSUE TYPE

• Bug Report

COMPONENT NAME

Marvin

CLOUDSTACK VERSION

CONFIGURATION

OS / ENVIRONMENT

Ubuntu 20.04

SUMMARY

STEPS TO REPRODUCE

EXPECTED RESULTS

ACTUAL RESULTS