Fix CSP error from Pingdom RUM script
Fix CSP error from Pingdom RUM script

Fix CSP error caused by a new collection domain for Pingdom Real User Monitoring script.

martincostello/alexa-london-travel-site,martincostello/alexa-london-travel-site,martincostello/alexa-london-travel-site,martincostello/alexa-london-travel-site