Not able to run k8s node e2e tests

[harche]

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

/kind bug

Description
Kubernetes node e2e tests execute docker info --format '{{json .}}' command before starting with the tests. I see the support was added for GO template {{ json . }} in podman a while back in #2688 but I am still seeing the issue.

I am trying to execute node e2e tests on Fedora 32 with podman (via podman-docker.norach)

Steps to reproduce the issue:

1. clone github.com/kubernetes/kubernetes

2. make test-e2e-node

Describe the results you received:

CGROUPS_PIDS: enabled
Validating package...
F0710 11:20:35.434641   90024 e2e_node_suite_test.go:151] system validation failed: [failed executing "docker info --format '{{json .}}'"\noutput: Error: template: info:1: function "json" not defined
\nerror: exit status 125]

# docker info --format '{{json .}}'
Error: template: info:1: function "json" not defined

Describe the results you expected:
docker info --format '{{json .}}' should work to make sure we are able to execute k8s e2e tests.

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

Output of podman version:

# podman version 
Version:      2.0.2
API Version:  1
Go Version:   go1.14.3
Built:        Thu Jan  1 00:00:00 1970
OS/Arch:      linux/amd64

Also, what's up with that Built date?
Output of podman info --debug:

host:
  arch: amd64
  buildahVersion: 1.15.0
  cgroupVersion: v2
  conmon:
    package: conmon-2.0.18-1.fc32.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.0.18, commit: 6e8799f576f11f902cd8a8d8b45b2b2caf636a85'
  cpus: 32
  distribution:
    distribution: fedora
    version: "32"
  eventLogger: file
  hostname: harpatil-node-tests
  idMappings:
    gidmap: null
    uidmap: null
  kernel: 5.6.6-300.fc32.x86_64
  linkmode: dynamic
  memFree: 120888156160
  memTotal: 126625615872
  ociRuntime:
    name: crun
    package: crun-0.14-2.fc32.x86_64
    path: /usr/bin/crun
    version: |-
      crun version 0.14
      commit: ebc56fc9bcce4b3208bb0079636c80545122bf58
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +YAJL
  os: linux
  remoteSocket:
    path: /run/podman/podman.sock
  rootless: false
  slirp4netns:
    executable: ""
    package: ""
    version: ""
  swapFree: 0
  swapTotal: 0
  uptime: 46m 6.18s
registries:
  search:
  - registry.fedoraproject.org
  - registry.access.redhat.com
  - registry.centos.org
  - docker.io
store:
  configFile: /etc/containers/storage.conf
  containerStore:
    number: 0
    paused: 0
    running: 0
    stopped: 0
  graphDriverName: overlay
  graphOptions:
    overlay.mountopt: nodev,metacopy=on
  graphRoot: /var/lib/containers/storage
  graphStatus:
    Backing Filesystem: extfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "true"
  imageStore:
    number: 0
  runRoot: /var/run/containers/storage
  volumePath: /var/lib/containers/storage/volumes
version:
  APIVersion: 1
  Built: 0
  BuiltTime: Thu Jan  1 00:00:00 1970
  GitCommit: ""
  GoVersion: go1.14.3
  OsArch: linux/amd64
  Version: 2.0.2

Package info (e.g. output of rpm -q podman or apt list podman):

podman-2.0.2-1.fc32.x86_64```

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

[vrothberg]

Thanks for opening the issue, @harche!

I works when adding a space with '{{ json .}}'. I'll take a look to make it a bit more tolerant.

[vrothberg]

It's not defined for podman info but note that #2688 referred to podman version

[baude]

I think templates require the space?