Add dependencies on docker and kubelet service when copying master co…

[dchen1107]

…mponents manifests to /etc/kubernetes/manifest

cc/ @thockin @brendandburns

Earlier merged pr #10312 adds the dependencies between kube-master-addon and docker, kubelet to avoid the race, which is wrong. This pr creates the proper orders on copying those master component manifest file after docker and kubelet services are running.

Here are some manual tests I have done on master node:

Remove manifest file
# rm -rf /etc/kubernetes/manifests/kube-apiserver.manifest

Run salt:
# salt-call state.highstate
....

Check if manifest is copied over
# ls -alt  /etc/kubernetes/manifests/kube-apiserver.manifest 
-rw-r--r-- 1 root root 3350 Jun 25 04:22 /etc/kubernetes/manifests/kube-apiserver.manifest

Failure tests:

On master node, manually update salt file asking it depends on dockesr, instead of docker; then remove manifest file
# rm -rf /etc/kubernetes/manifests/kube-apiserver.manifest

Run salt. Salt failed to copy manifest file over:

# salt-call state.highstate
...
----------
          ID: /etc/kubernetes/manifests/kube-apiserver.manifest
    Function: file.managed
      Result: False
     Comment: The following requisites were not found:
                                 require:
                                     service: dockesr
     Changes:   
----------
...

[dchen1107]

ok to test

[dchen1107]

cc/ @ArtfulCoder

[ArtfulCoder]

I don't have full context on the overall problem we are trying to fix.
From a salt perpective, it looks good.

[brendandburns]

LGTM

[thockin]

LGTM, but my salt is weak