do not install the server with uppercase hostname

[vsaase]

I ran into this problem that the installation failed due to having uppercase hostname.

The MicroK8s documentation has this to say:

To fix this you can change the hostname or use the --hostname-override argument in kubelet’s configuration in /var/snap/microk8s/current/args/kubelet.```

[pschader]

Dear @vsaase thank you very much for your pull request and sorry for the delayed reply. We currently creating contribution guidelines to make including external contributions easier and faster. For now, to accept your contribution we would need you to post the appended declaration in this discussion. Sorry for the inconvenience.

Here the declaration:

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified
    it.

(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.