feature: implement RemoveImage and ImageStatus methods for cri manager

[zeppp]

Signed-off-by: zeppp [email protected]

1.Describe what this PR did
implement RemoveImage and ImageStatus methods for cri manager
2.Does this pull request fix one issue?
fixes part of #420

3.Describe how you did it

4.Describe how to verify it
Use cri-tools to check.

→ # crictl images
IMAGE                       TAG                 IMAGE ID            SIZE
docker.io/library/busybox   latest              bbc3a03235220       720kB

→ # crictl rmi docker.io/library/busybox 
FATA[0000] image status request failed: rpc error: code = Unknown desc = image: docker.io/library/busybox: not found 

→ # crictl rmi docker.io/library/busybox:latest
Deleted: docker.io/library/busybox:latest

→ # crictl images
IMAGE               TAG                 IMAGE ID            SIZE

→ # crictl inspecti docker.io/library/busybox:latest
{
  "status": {
    "id": "sha256:bbc3a03235220b170ba48a157dd097dd1379299370e1ed99ce976df0355d24f0",
    "repoTags": [
      "docker.io/library/busybox:latest"
    ],
    "repoDigests": [
      "docker.io/library/busybox@sha256:bbc3a03235220b170ba48a157dd097dd1379299370e1ed99ce976df0355d24f0"
    ],
    "size": "2699",
    "username": ""
  }
}

5.Special notes for reviews

[codecov-io]

Codecov Report

Merging #496 into master will decrease coverage by 0.14%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #496      +/-   ##
==========================================
- Coverage   18.48%   18.34%   -0.15%     
==========================================
  Files          34       34              
  Lines        1747     1761      +14     
==========================================
  Hits          323      323              
- Misses       1389     1403      +14     
  Partials       35       35

Impacted Files	Coverage Δ
daemon/mgr/cri.go	0% <0%> (ø)	⬆️

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[allencloud]

What does the status of image mean? The existence of the image, or the ImageInfo as meta data of image?

[zeppp]

ImageStatus will return the Basic information about a container image includes "ID" and "Size" and extra information about the image if needed. Also, if the image isn't present,it will return nil.

[zeppp]

Updated 4.Describe how to verify it

[allencloud]

It is some kind of weird to use status, Maybe info is better. Not blocking this pr.

[allencloud]

LGTM