Make use of sudo to install tar

[johscheuer]

Signed-off-by: Johannes M. Scheuermann [email protected]
This PR: #893 introduced a change to make the gobetween script also be usable on CentOS, sadly this breaks the ubuntu setup (since ubuntu uses the ubuntu user and not root):

openstack_compute_instance_v2.lb (remote-exec):   Checking Host Key: false
openstack_compute_instance_v2.lb: Still creating... [50s elapsed]
openstack_compute_instance_v2.lb (remote-exec): Connected!
openstack_compute_instance_v2.lb (remote-exec): E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
openstack_compute_instance_v2.lb (remote-exec): E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

What this PR does / why we need it:
Without this PR the provisioning of new clusters will fail with the error message from above.

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

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Fix recursion bug in gobetween.sh script

[kubermatic-bot]

Hi @johscheuer. Thanks for your PR.

I'm waiting for a kubermatic member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[xmudrii]

Thank you! 💯 👍

/lgtm
/approve

[kubermatic-bot]

LGTM label has been added.

Git tree hash: 7e1862e9def132629bbf786a714553b5b8f3ed27

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johscheuer, xmudrii

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [xmudrii]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[xmudrii]

/test all

[kron4eg]

/retest