Added command to show eHerkenning services.

[joeribekker]

Running this command will download the service catalog and shows all services for given organisation number.

Example:

$ python manage.py show_services preprod 00000001002564440000

Service provider organization: Gemeente Amsterdam
+-- Service definition: Portal (Portal)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:0000
+-- Service definition: Milieuzone (Uw zaken regelen met de gemeente Amsterdam via Mijn Amsterdam)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9017
+-- Service definition: Online aanvragen en wijzigingen (ACC) (Online aanvragen en wijzigingen (ACC))
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9016
+-- Service definition: Online aanvragen en wijzigingen - Niveau 2+ (ACC) (Online aanvragen en wijzigingen - Niveau 2+ (ACC))
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9015
+-- Service definition: Online aanvragen en wijzigingen - Niveau 2 (ACC) (Online aanvragen en wijzigingen - Niveau 2 (ACC))
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9014
+-- Service definition: mijnErfpacht Zakelijk gebruik (mijnErfpacht Zakelijk gebruik)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9018
+-- Service definition: Mijn Erfpacht  professional (Mijn Erfpacht  professional)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9019
+-- Service definition: Formulier voor niet ingezetenen (Form for non-NL citizens)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9111
+-- Service definition: Parkeervergunningen (Parkeervergunningen)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9020
+-- Service definition: Autoluw Oudezijde Acc (Autoluw Oudezijde Acc)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9021
+-- Service definition: TPAC Acc (TPAC Acc)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9022
+-- Service definition: iBurgerzaken Preproductie (Direct uw burgerzaken regelen)
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9023
+-- Service definition: Mijn Subsidies (ACC) (Mijn Subsidies (ACC))
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9024
+-- Service definition: Mijn Parkeren (Weesp) (ACC) (Mijn Parkeren (Weesp) (ACC))
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9026
+-- Service definition: Wonenportaal (ACC) (Wonenportaal (ACC))
    +-- Service ID: urn:etoegang:DV:00000001002564440000:services:9025

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.10%. Comparing base (970d3ed) to head (c72b175).
Report is 20 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #57      +/-   ##
==========================================
+ Coverage   96.01%   96.10%   +0.08%     
==========================================
  Files          72       73       +1     
  Lines        3216     3260      +44     
==========================================
+ Hits         3088     3133      +45     
+ Misses        128      127       -1     

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[SilviaAmAm]

The oin argument is not required, what happens if it is None?

[SilviaAmAm]

I don't think that this help text matches what the command does?