calico: check if inventory settings match cluster settings

[champtar]

What type of PR is this?
/kind feature

What this PR does / why we need it:
If some settings were changed from the default but not commited into an inventory repo,
we risk breaking the cluster / cause downtime, so add some extra checks

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

Hi @champtar. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[floryut]

/ok-to-test

[floryut]

/approve
This looks good, @oomichi @EppO @LuckySB

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: champtar, floryut

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[floryut]

/cc @oomichi
/cc @EppO

[oomichi]

/lgtm

[oomichi]

This additional check works correctly as https://gitlab.com/kargo-ci/kubernetes-sigs-kubespray/-/jobs/882034135

TASK [network_plugin/calico : Get Calico default-pool configuration] ***********
task path: /builds/kargo-ci/kubernetes-sigs-kubespray/roles/network_plugin/calico/tasks/check.yml:40
Tuesday 01 December 2020  00:10:01 +0000 (0:00:00.061)       0:12:27.143 ****** 
ok: [instance-1 -> None] => {"changed": false, "cmd": "calicoctl.sh get ipPool default-pool -o json", "failed_when_result": false, "msg": "[Errno 2] No such file or directory: b'calicoctl.sh': b'calicoctl.sh'", "rc": 2}
TASK [network_plugin/calico : Set calico_pool_conf] ****************************
task path: /builds/kargo-ci/kubernetes-sigs-kubespray/roles/network_plugin/calico/tasks/check.yml:48
Tuesday 01 December 2020  00:10:01 +0000 (0:00:00.428)       0:12:27.571 ****** 
TASK [network_plugin/calico : Check if inventory match current cluster configuration] ***
task path: /builds/kargo-ci/kubernetes-sigs-kubespray/roles/network_plugin/calico/tasks/check.yml:53