Kubernetes Submit Queue d3dc9cd9ba Merge pull request #51114 from jsafrane/exec-rbd ...

Automatic merge from submit-queue (batch tested with PRs 51114, 51233, 51024, 51053, 51197)

rbd: Use VolumeHost.GetExec() to execute stuff in volume plugins

**What this PR does / why we need it**:

This PR updates rbd volume plugin to use `VolumeHost.GetExec()` to execute utilities like mkfs and lsblk instead of simple `os/exec`. This prepares the volume plugin to run these utilities in containers instead of running them on the host + makes the volume plugin more independent and less hardcoded.

See proposal in https://github.com/kubernetes/community/pull/589.

Note that this PR does **not** change place where the utilities are executed - `VolumeHost.GetExec()` still leads directly to `os/exec`. It will be changed when the aforementioned proposal is merged and implemented.

@kubernetes/sig-storage-pr-reviews 

**Release note**:
```release-note
NONE
```

2017-08-25 06:22:09 -07:00

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