Failed to Install pcp Noninteractively

[Hao Chen]

Ubuntu version: I use the docker images ubuntu:24.04, the image hash is fabf3a8d4949

```
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=24.04
DISTRIB_CODENAME=noble
DISTRIB_DESCRIPTION="Ubuntu 24.04 LTS"
```

Package version: pcp 6.2.0-1.1build4

What I expect: Being able to install it noninteractively

What happened: failed when setting up the package.

Simplest Reproduction:

```
$ docker run --rm -it ubuntu:24.04 bash
# apt-get -y update; \
DEBIAN_FRONTEND=noninteractive apt-get -y install sudo; \
sudo DEBIAN_FRONTEND=noninteractive apt-get -y install software-properties-common # <== This is important. Cannot reproduce without this.
# sudo DEBIAN_FRONTEND=noninteractive apt-get -y install pcp
...
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
dpkg: error processing package pcp (--configure):
 installed pcp package post-installation script subprocess returned error exit status 1
Processing triggers for libc-bin (2.39-0ubuntu8.1) ...
Errors were encountered while processing:
 pcp
E: Sub-process /usr/bin/dpkg returned an error code (1)
```

Note that if I skipped `software-properties-common` then there are no failures.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Thomas Aglassinger (roskakori)]

It seems the issue is related to the pcp package, which fails to install even when attempted after the upgrade.

```
$ sudo apt install -y cockpit
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
cockpit is already the newest version (314-1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up pcp (6.2.0-1.1build4) ...
Job for pmlogger.service failed because the service did not take the steps required by its unit configuration.
See "systemctl status pmlogger.service" and "journalctl -xeu pmlogger.service" for details.
dpkg: error processing package pcp (--configure):
 installed pcp package post-installation script subprocess returned error exit status 1
dpkg: dependency problems prevent configuration of cockpit-pcp:
 cockpit-pcp depends on pcp; however:
  Package pcp is not configured yet.

dpkg: error processing package cockpit-pcp (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 pcp
 cockpit-pcp
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)
```

[Thomas Aglassinger (roskakori)]

I managed to git rid of cockpit using the following commands:

```
sudo apt --fix-broken install
sudo apt-get remove -y cockpit cockpit-pcp pcp
sudo apt autoremove -y
```