Make + prefix mandatory for phoneNumber

[jlurien]

What type of PR is this?

• correction

What this PR does / why we need it:

Alignment with Commonalities about + prefix for international E.164 phoneNumbers

Which issue(s) this PR fixes:

Fixes #298

[hdamker]

@jlurien looks good, but you need to make the linter happy :-)

[RandyLevensalor]

This actually corrects three issues with the regex.

1. Requires +
2. Reduces the minimum length
3. Decreases max length

[hdamker]

@RandyLevensalor

2. Reduces the minimum length
3. Decreases max length

Actually there is no change of these lengths, previously it was max 15 digits of [0-9] and now it is one digit [1-9] followed by max 14 digits [0-9]. The additional check is that the first digit after the + can't be 0 (as there is no country code starting with 0).

[eric-murray]

@RandyLevensalor
E.164 allows international numbers to be up to 15 digits long, so we need to support that even if there are no actual examples of 15 digit telephone numbers

[jlurien]

Yes, new pattern is copied from the artifact in Commonalities

[sfnuser]

Looks good to me. Thanks