🏃 Bump the Golang version to 1.16

[fmuyassarov]

What this PR does / why we need it:
Bump the Golang version to 1.16

[metal3-io-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fmuyassarov, kashifest

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[fmuyassarov]

/hold until metal3-io/project-infra#172 gets merged
/test-integration

[fmuyassarov]

/hold cancel
since metal3-io/project-infra#172 is merged now.

[fmuyassarov]

/test-integration

[fmuyassarov]

/test-integration

[fmuyassarov]

/cc @furkatgofurov7

[furkatgofurov7]

Seems you are missing some more places that need to be updated, see below:

• https://github.com/metal3-io/ip-address-manager/blob/master/Makefile#L322

• https://github.com/metal3-io/ip-address-manager/blob/master/hack/ensure-go.sh#L34

• https://github.com/metal3-io/ip-address-manager/blob/master/hack/tools/go.mod#L3

[fmuyassarov]

Seems you are missing some more places that need to be updated, see below:

* https://github.com/metal3-io/ip-address-manager/blob/master/Makefile#L322

* https://github.com/metal3-io/ip-address-manager/blob/master/hack/ensure-go.sh#L34

* https://github.com/metal3-io/ip-address-manager/blob/master/hack/tools/go.mod#L3

@furkatgofurov7 thanks. Fixed.

[fmuyassarov]

/test-integration

[fmuyassarov]

/cc @kashifest

[furkatgofurov7]

/lgtm

[fmuyassarov]

/test-integration