Make integration tests independent of go version changes

[rmohr]

What this PR does / why we need it:

With the new Dockerfile in place with #46 which builds the manager binary, the
binary does not have to be built upfront with the external golang
version. Instead the internal one can be used which makes for instance
integration jobs independent of the go versions installed there.

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

Release notes:

NONE

[rmohr]

/cc @cchengleo

/cc @nirarg

@nirarg once this PR is in, you also need to bump the golang version in the Dockerfile in PR #50: https://github.com/kubernetes-sigs/cluster-api-provider-kubevirt/blob/main/Dockerfile#L19

We are referencing the golang versions still in too many places, but we will get to a more sane model :)

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In response to this:

/cc @cchengleo

/cc @nirarg

@nirarg once this PR is in, you also need to bump the golang version in the Dockerfile in PR #50: https://github.com/kubernetes-sigs/cluster-api-provider-kubevirt/blob/main/Dockerfile#L19

We are referencing the golang versions still in too many places, but we will get to a more sane model :)

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[davidvossel]

/lgtm

yep, we don't need the make manager now that make docker-build uses the multi stage docker build. Thanks

[k8s-ci-robot]

@davidvossel: changing LGTM is restricted to collaborators

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In response to this:

/lgtm

yep, we don't need the make manager now that make docker-build uses the multi stage docker build. Thanks

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[cchengleo]

@nirarg once this PR is in, you also need to bump the golang version in the Dockerfile in PR #50: https://github.com/kubernetes-sigs/cluster-api-provider-kubevirt/blob/main/Dockerfile#L19

We are referencing the golang versions still in too many places, but we will get to a more sane model :)

I think later we should unify the default golang version for the repo.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cchengleo, rmohr

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[cchengleo]

/lgtm

[nirarg]

@nirarg once this PR is in, you also need to bump the golang version in the Dockerfile in PR #50: https://github.com/kubernetes-sigs/cluster-api-provider-kubevirt/blob/main/Dockerfile#L19

Thanks @rmohr
I changed the version in my PR