podman network rm --force fails when the network is used by a pod

[Luap99]

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind bug

Description

podman network rm --force fails when the network is used by a pod.

Steps to reproduce the issue:

$ sudo podman network create testnet
/etc/cni/net.d/testnet.conflist
$ sudo podman pod create --network testnet
38e69fa18b8462743bd878050ae2cf643c38debb8fa147dd384401bdf1c82ea3
$ sudo podman network rm -f testnet
Error: container 5cbf27a71bbd576c4449788859148feb4ec46a8bcfd6068ff06b01fc98353427 is the infra container of pod 38e69fa18b8462743bd878050ae2cf643c38debb8fa147dd384401bdf1c82ea3 and cannot be removed without removing the pod
$ sudo podman network ls
NAME         VERSION  PLUGINS
podman       0.4.0    bridge,portmap,firewall,tuning
testnet      0.4.0    bridge,portmap,firewall,dnsname

Describe the results you received:

Error: container 5cbf27a71bbd576c4449788859148feb4ec46a8bcfd6068ff06b01fc98353427 is the infra container of pod 38e69fa18b8462743bd878050ae2cf643c38debb8fa147dd384401bdf1c82ea3 and cannot be removed without removing the pod
The network is not removed with --force set.

Describe the results you expected:

The network and pod should have been removed.

Output of podman version:

Version:      2.2.0-dev
API Version:  2.0.0
Go Version:   go1.14.9
Git Commit:   03d01abec6d028e9d5f60615b0451e42d0611d1d
Built:        Sun Sep 27 22:12:23 2020
OS/Arch:      linux/amd64

Output of podman info --debug:

host:
  arch: amd64
  buildahVersion: 1.16.2
  cgroupManager: systemd
  cgroupVersion: v2
  conmon:
    package: conmon-2.0.21-2.fc32.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.0.21, commit: 81d18b6c3ffc266abdef7ca94c1450e669a6a388'
  cpus: 16
  distribution:
    distribution: fedora
    version: "32"
  eventLogger: journald
  hostname: paul-pc
  idMappings:
    gidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
    uidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
  kernel: 5.8.11-200.fc32.x86_64
  linkmode: dynamic
  memFree: 5456822272
  memTotal: 16790605824
  ociRuntime:
    name: crun
    package: crun-0.14.1-5.fc32.x86_64
    path: /usr/bin/crun
    version: |-
      crun version 0.14.1
      commit: 598ea5e192ca12d4f6378217d3ab1415efeddefa
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +YAJL
  os: linux
  remoteSocket:
    path: /run/user/1000/podman/podman.sock
  rootless: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.1.4-1.fc32.x86_64
    version: |-
      slirp4netns version 1.1.4
      commit: b66ffa8e262507e37fca689822d23430f3357fe8
      libslirp: 4.3.1
      SLIRP_CONFIG_VERSION_MAX: 2
  swapFree: 8427139072
  swapTotal: 8463052800
  uptime: 2h 56m 37.67s (Approximately 0.08 days)
registries:
  search:
  - registry.fedoraproject.org
  - registry.access.redhat.com
  - registry.centos.org
  - docker.io
store:
  configFile: /home/paul/.config/containers/storage.conf
  containerStore:
    number: 2
    paused: 0
    running: 0
    stopped: 2
  graphDriverName: overlay
  graphOptions:
    overlay.imagestore: /home/paul/container_images
    overlay.mount_program:
      Executable: /usr/bin/fuse-overlayfs
      Package: fuse-overlayfs-1.1.2-1.fc32.x86_64
      Version: |-
        fusermount3 version: 3.9.1
        fuse-overlayfs: version 1.1.0
        FUSE library version 3.9.1
        using FUSE kernel interface version 7.31
  graphRoot: /home/paul/.local/share/containers/storage
  graphStatus:
    Backing Filesystem: btrfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "false"
  imageStore:
    number: 5
  runRoot: /run/user/1000/containers
  volumePath: /home/paul/.local/share/containers/storage/volumes
version:
  APIVersion: 2.0.0
  Built: 1601237543
  BuiltTime: Sun Sep 27 22:12:23 2020
  GitCommit: 03d01abec6d028e9d5f60615b0451e42d0611d1d
  GoVersion: go1.14.9
  OsArch: linux/amd64
  Version: 2.2.0-dev