Fixed Indonesian Phone number Regex

[idrisakmal]

Context

Indonesian phone number validator previously allows any digit after +62.
This breaks our validation process where user can enter +621 and the validation returns as true thus costing us to send sms to an invalid number ie: +621

Fix

Fixed the indonesian phone regex to only accept +62 8nn || 08nn, where 8nn denotes the mobile phone provider in Indonesia. Then another 8-12 numbers as the phone number.

Based on the test, there are numbers which starts from 0. But referring to https://wikitravel.org/en/Wikitravel:Phone_numbers#Indonesia all mobile numbers will only starts with 8nn. I fixed the regex anyway to match all the test cases.

[profnandaa]

Can you add test cases for this in /test/validators.js?

[profnandaa]

Good catch though! 🎉

[chriso]

Thanks for the PR 😄