update test case to agree with updated test data

test/test_netconf_validation.py

+import glob
 import os
+import re
+
 import pytest
 from lxml import etree
 from inventory_provider.juniper import validate_netconf_config
 
+TEST_DATA_DIRNAME = os.path.join(
+        os.path.dirname(__file__), 'data')
 
-@pytest.mark.parametrize('hostname', [
-    'mx1.ams.nl.geant.net',
-    'mx1.ath2.gr.geant.net',
-    'mx1.buc.ro.geant.net',
-    'mx1.bud.hu.geant.net',
-    'mx1.dub.ie.geant.net',
-    'mx1.dub2.ie.geant.net',
-    'mx1.fra.de.geant.net',
-    'mx1.gen.ch.geant.net',
-    'mx1.ham.de.geant.net',
-    'mx1.kau.lt.geant.net',
-    'mx1.lis.pt.geant.net',
-    'mx1.lon.uk.geant.net',
-    'mx1.lon2.uk.geant.net',
-    'mx1.mad.es.geant.net',
-    'mx1.mar.fr.geant.net',
-    'mx1.mil2.it.geant.net',
-    'mx1.par.fr.geant.net',
-    'mx1.poz.pl.geant.net',
-    'mx1.pra.cz.geant.net',
-    'mx1.sof.bg.geant.net',
-    'mx1.tal.ee.geant.net',
-    'mx1.vie.at.geant.net',
-    'mx2.ath.gr.geant.net',
-    'mx2.bra.sk.geant.net',
-    'mx2.bru.be.geant.net',
-    'mx2.kau.lt.geant.net',
-    'mx2.lis.pt.geant.net',
-    'mx2.lju.si.geant.net',
-    'mx2.rig.lv.geant.net',
-    'mx2.tal.ee.geant.net',
-    'mx2.zag.hr.geant.net',
-    'qfx.fra.de.geant.net',
-    'qfx.lon2.uk.geant.net',
-    'qfx.par.fr.geant.net'
-])
-def test_netconf_docs(hostname):
-    filename = os.path.join(
-        os.path.dirname(__file__),
-        'data',
-        hostname + '-netconf.xml')
+AVAILABLE_NETCONF_HOSTS = []
+for fn in glob.glob(os.path.join(TEST_DATA_DIRNAME, '*-netconf.xml')):
+    m = re.match('(.*)-netconf.xml', os.path.basename(fn))
+    assert m  # sanity
+    AVAILABLE_NETCONF_HOSTS.append(m.group(1))
 
+
+@pytest.mark.parametrize('hostname', AVAILABLE_NETCONF_HOSTS)
+def test_netconf_docs(hostname):
+    filename = os.path.join(TEST_DATA_DIRNAME, f'{hostname}-netconf.xml')
     doc = etree.parse(filename)
     validate_netconf_config(doc)