Log Message:
net/py-lexicon: Update to 2.7.0.

2.7.0.
- Subreg.cz: Use Zeep instead of PySimpleSOAP library

2.6.0
- Improvements to argument handling

2.5.0
- Add Google Cloud DNS provider

2.4.7
- Add Zeit provider

2.4.6
- Fixes to dnsimple

2.4.5
- Add support for Exoscale

2.4.4
- Add support for online.net

2.4.3
- Test fixes

2.4.2
- Minor fixes to OVH provider

2.4.1
- add support for Gandi LiveDNS API