caddy-frontend: Follow up slapos.core changes

Since da03653908aea9a62f805faf0328f7b2f046abaa slapos.core's slapproxy transmit
more parameters, so adapt tests to account for it.
2 jobs for fix-1.0.207.1 in 0 seconds
latest
Status Job ID Name Coverage
  External
passed SlapOS.SoftwareReleases.IntegrationTest-luke/fix-1.0.207.1

03:11:42

passed SlapOS.SoftwareReleases.IntegrationTest-luke/fix-1.0.207.1

02:06:23