Modernize number literals

Use Python-3 compatible syntax, without breaking compatibility with py 2.7

- Octals literals start with 0o to prevent confusion
- The "L" at the end of large int literals is not required as they use
  long on Python 2 automatically.
- Using 'int' instead of 'long' for small numbers is OK in all cases except
  strict type checking checking, e.g. type(0).

https://fedorahosted.org/freeipa/ticket/4985

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

ipalib/plugins/dns.py

@@ -2374,7 +2374,7 @@ class dnszone(DNSZoneBase):
             label=_('SOA serial'),
             doc=_('SOA record serial number'),
             minvalue=1,
-            maxvalue=4294967295L,
+            maxvalue=4294967295,
             default_from=_create_zone_serial,
             autofill=True,
         ),

ipalib/plugins/trust.py

@@ -334,7 +334,7 @@ def add_range(myapi, trustinstance, range_name, dom_sid, *keys, **options):
         base_id = DEFAULT_RANGE_SIZE + (
             pysss_murmur.murmurhash3(
                 dom_sid,
-                len(dom_sid), 0xdeadbeefL
+                len(dom_sid), 0xdeadbeef
             ) % 10000
         ) * DEFAULT_RANGE_SIZE