[FIXED JENKINS-16278] Fixed RememberMe cookie signature generation (bugfix on SECURITY-49)

New cookie signature generation was not implemented in creation of RememberMe cookie, but only in its verification.
Fixed by new override TokenBasedRememberMeServices2.loginSuccess
Merge pull request #673 from denebolar/JENKINS-16278

[FIXED JENKINS-16278] Fixed RememberMe cookie signature generation (bugfix on SECURITY-49)
Thanks