Switch to email-ext plugin for Jenkins build-email notifications (#4068)
Switch to email-ext plugin for Jenkins build-email notifications (#4068)

* Switch to email-ext plugin for Jenkins notifications

* Fix path issue

Tayamarn/socorro,Tayamarn/socorro,mozilla/socorro,mozilla/socorro,Tayamarn/socorro,mozilla/socorro,lonnen/socorro,Tayamarn/socorro,lonnen/socorro,Tayamarn/socorro,mozilla/socorro,lonnen/socorro,Tayamarn/socorro,lonnen/socorro,mozilla/socorro,mozilla/socorro