[wp-trac] [WordPress Trac] #50296: Improve Travis config to pass config validation

[WordPress Trac]

#50296: Improve Travis config to pass config validation
------------------------------+--------------------
 Reporter:  ocean90           |      Owner:  (none)
     Type:  enhancement       |     Status:  new
 Priority:  normal            |  Milestone:  5.5
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:
  Focuses:                    |
------------------------------+--------------------
 Current output:
 {{{
 notifications.slack: unknown key on_start (never)
 root: missing dist, using the default xenial
 root: missing os, using the default linux
 root: key matrix is an alias for jobs, using jobs
 }}}

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/50296>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform