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use `/etc/hosts` instead of `/` to check for common
device id, if the device is same for `/etc/hosts`
and the --bind mount to detect root disks.

Bonus enhance healthcheck logging by adding maintenance
tags, for all messages.

With this change the expiry is validated for the license key JWT

This PR also preserves source ETag for replication

Background: https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w

Remove these custom headers from incoming and outgoing requests.

license verification package implements a simple library to 
verify MinIO Subnet license keys.

Bonus move our CI/CD to go1.14

adds a feature where we can fetch the MinIO
command-line remotely, this
is primarily meant to add some stateless
nature to the MinIO deployment in k8s
environments, MinIO operator would run a
webhook service endpoint
which can be used to fetch any environment
value in a generalized approach.

to list all targets across a tenant.
Also fixing some validations.

Also inherit storage class from source object
if replication configuration does not have a storage
class specified for destination bucket.

It is possible in situations when server was deployed
in asymmetric configuration in the past such as

```
minio server ~/fs{1...4}/disk{1...5}
```

Results in setDriveCount of 10 in older releases
but with fairly recent releases we have moved to
having server affinity which means that a set drive
count ascertained from above config will be now '4'

While the object layer make sure that we honor
`format.json` the storageClass configuration however
was by mistake was using the global value obtained
by heuristics. Which leads to prematurely using
lower parity without being requested by the an
administrator.

This PR fixes this behavior.

Bonus also fix a bug where we did not purge relevant
service accounts generated by rotating credentials
appropriately, service accounts should become invalid
as soon as its corresponding parent user becomes invalid.

Since service account themselves carry parent claim always
we would never reach this problem, as the access get
rejected at IAM policy layer.

- Add methods to set/remove replication rules (poornas)
- fix: only SSE-C headers should be applied to destination (Harshavardhana)
- fix: avoid data race by copying the buffer (Harshavardhana)
- remove deprecated build badges (Harshavardhana)
- fix: handle readFull bug with certain readers (Harshavardhana)
- fix a typo in README.md (Julien K)
- lifecycle: Fix marshaling expiration date/days (Anis Elleuch)
- add replication-status, expiration headers (Harshavardhana)
- Return object's version id in StatObject(Anis Elleuch)
- display appropriate funcName with nested callers (Harshavardhana)
- allow KMS tests to be run in the CI/CD (Harshavardhana)
- fix: removing lifecycle properly (Harshavardhana)
- feat: Add ListenNotification API to listen for all events (Harshavardhana)

Check if object lock is enabled on
destination bucket while setting replication
configuration on a object lock enabled bucket.