Update 0008_reports.py (#1702)

* Update 0008_reports.py

PG10 version string appears to, at least on Windows, contain a comma.

* Fix missing re import.

Fix missing re import.

* Update 0008_reports.py

netbox/extras/migrations/0008_reports.py

@@ -2,6 +2,7 @@
 # Generated by Django 1.11.4 on 2017-09-26 21:25
 from __future__ import unicode_literals
 from distutils.version import StrictVersion
+import re
 
 from django.conf import settings
 import django.contrib.postgres.fields.jsonb
@@ -18,7 +19,7 @@ def verify_postgresql_version(apps, schema_editor):
         with connection.cursor() as cursor:
             cursor.execute("SELECT VERSION()")
             row = cursor.fetchone()
-            pg_version = row[0].split()[1]
+            pg_version = re.match('^PostgreSQL (\d+\.\d+(\.\d+)?)', row[0]).group(1)
             if StrictVersion(pg_version) < StrictVersion('9.4.0'):
                 raise Exception("PostgreSQL 9.4.0 or higher is required ({} found). Upgrade PostgreSQL and then run migrations again.".format(pg_version))