Set typ field in JSONWebToken::RSAToken
Set typ field in JSONWebToken::RSAToken

ruby-jwt v2.0 removed the `typ` header in
https://github.com/jwt/ruby-jwt/commit/cc41d53e00f8cbf015271b53f5ad761bd6ac2312.

To ensure tokens don't get marked invalid during an upgrade,
add it back to ensure backwards compatibility.

dreampet/gitlab,stoplightio/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,iiet/iiet-git,axilleas/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,dreampet/gitlab