Closes #63

Related: #63

Resolve "Ensure netfilter-persistent is installed"

Closes #64

See merge request openappstack/bootstrap!31

Login test to keycloak

Closes #52

See merge request openappstack/bootstrap!27

On alpine:3.8 chromium (68.0.3440.75-r0) segfaults even when just using
`chromium-browser --version`. See
https://bugs.alpinelinux.org/issues/9161

alpine:3.9 shipps chromium 72.0.3626.109 which fixes the issue.

See #60 for details.
For Ci droplets we use LE staging CA, so we need to provide curl
with the CA cert. Surprisingly, curl will still validate certs from
LE production CA even if "--cacert=./letsencrypt_fakelerootx1.pem" is
used.

See #53

See #52

Closes #52

Closes one task of #41

On CI we still prefer to use alpine system packages
since this is much faster than installing every python
package via pip.

Resolve "Use LE staging for CI"

Closes #60

See merge request openappstack/bootstrap!28

First testinfra example tests

Closes #23

See merge request openappstack/bootstrap!25