Add support for Armenia phone

[dani2819]

Resolves: #1215
Resolves the above-mentioned issue but with a different kind of regex (not the one stated in the issue). That regex was very general. To know more about the format of Armenia phone, view this link.

The format is +374 or 0 followed by 10 plus 6 more digits OR +374 followed by any digit starts with 2 - 9 plus 7 more digits. It can start with +374 or 0. Hence, the regex is /^(\+?374|0)(10\d{6}$|[2-9]\d{7}$)/