--infra-command is ignored in pod creation

[sshnaidm]

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

/kind bug

Description

--infra-command seems to be ignored, both for versions 1 and 2 of podman.

Steps to reproduce the issue:

1. podman pod create --name test01 --infra-command=sleep

2. podman pod inspect test01

3. Inspect infra container: podman inspect ...-infra

Describe the results you received:

[
    {
        "Id": "59d93feebeff369663ad64d3b3d319f9fb28e6485ff49a0f72ae9ad07ad9ebb8",
        "Created": "2020-07-14T16:10:28.770968736+03:00",
        "Path": "/pause",
        "Args": [
            "/pause"
        ],
...
        "Config": {
...
            "Entrypoint": "/pause",
...

Describe the results you expected:
Command changes to sleep

Additional information you deem important (e.g. issue happens only occasionally):

Output of podman version:

Version:      2.1.0-dev
API Version:  1
Go Version:   go1.13.10
Git Commit:   3d3359086ef0ed0833a8ac8e9d06d9934d835139
Built:        Tue Jul 14 13:37:20 2020
OS/Arch:      linux/amd64

Output of podman info --debug:

host:
  arch: amd64
  buildahVersion: 1.16.0-dev
  cgroupVersion: v1
  conmon:
    package: conmon-2.0.16-2.fc31.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.0.16, commit: aec991fec16dc45935de184f2ea06a6ffca200a0'
  cpus: 4
  distribution:
    distribution: fedora
    version: "31"
  eventLogger: file
  hostname: sshnaidm.remote
  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: 5.6.11-200.fc31.x86_64
  linkmode: dynamic
  memFree: 6055346176
  memTotal: 25083031552
  ociRuntime:
    name: runc
    package: runc-1.0.0-102.dev.gitdc9208a.fc31.x86_64
    path: /usr/bin/runc
    version: |-
      runc version 1.0.0-rc10
      commit: 96f6022b37cbe12b26c9ad33a24677bec72a9cc3
      spec: 1.0.1-dev
  os: linux
  remoteSocket:
    path: /run/user/1000/podman/podman.sock
  rootless: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.0.1-1.fc31.x86_64
    version: |-
      slirp4netns version 1.0.1
      commit: 6a7b16babc95b6a3056b33fb45b74a6f62262dd4
      libslirp: 4.1.0
  swapFree: 10701762560
  swapTotal: 12645822464
  uptime: 125h 57m 1.08s (Approximately 5.21 days)
registries:
  search:
  - docker.io
  - registry.fedoraproject.org
  - quay.io
  - registry.access.redhat.com
  - registry.centos.org
store:
  configFile: /home/sshnaidm/.config/containers/storage.conf
  containerStore:
    number: 11
    paused: 0
    running: 3
    stopped: 8
  graphDriverName: overlay
  graphOptions:
    overlay.mount_program:
      Executable: /usr/bin/fuse-overlayfs
      Package: fuse-overlayfs-1.0.0-1.fc31.x86_64
      Version: |-
        fusermount3 version: 3.6.2
        fuse-overlayfs: version 1.0.0
        FUSE library version 3.6.2
        using FUSE kernel interface version 7.29
  graphRoot: /home/sshnaidm/.local/share/containers/storage
  graphStatus:
    Backing Filesystem: extfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "false"
  imageStore:
    number: 168
  runRoot: /tmp/1000
  volumePath: /home/sshnaidm/.local/share/containers/storage/volumes
version:
  APIVersion: 1
  Built: 1594723040
  BuiltTime: Tue Jul 14 13:37:20 2020
  GitCommit: 3d3359086ef0ed0833a8ac8e9d06d9934d835139
  GoVersion: go1.13.10
  OsArch: linux/amd64
  Version: 2.1.0-dev

Additional environment details (AWS, VirtualBox, physical, etc.):

[github-actions]

A friendly reminder that this issue had no activity for 30 days.

[mheon]

#7167 is a dupe of this, but has more comments. I'm going to close in favor of that one.