[RTEMS Project] #3887: Do not report remotes in RSB build log if --mail is used

[RTEMS trac]

#3887: Do not report remotes in RSB build log if --mail is used
--------------------------+-------------------------
  Reporter:  Chris Johns  |      Owner:  Chris Johns
      Type:  defect       |     Status:  assigned
  Priority:  normal       |  Milestone:  5.1
 Component:  tool/rsb     |    Version:  5
  Severity:  normal       |   Keywords:
Blocked By:               |   Blocking:
--------------------------+-------------------------
 Do not include the remote repos in a build repo is the `--mail` option is
 used. This avoids posting private repo configuration data for a user. This
 ticket is in response to this discussion ...

 https://lists.rtems.org/pipermail/devel/2020-February/057765.html

 If `--mail` is used report the remote repos as:
 {{{
 Remotes:
    [ removed, contact me at there.here for details ]
 }}}
 and keep the remotes for builds that are not posted.

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Ticket URL: <http://devel.rtems.org/ticket/3887>
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