Changes

contrib/jenkins: fix upload

Bring back the bootloader-sysmooctsim.{bin,elf} symlinks, so the upload
to "latest" does not fail with:
  rsync: [sender] link_stat "/build/gcc/bootloader-sysmooctsim.bin" failed: No such file or directory (2)
  rsync: [sender] link_stat "/build/gcc/bootloader-sysmooctsim.elf" failed: No such file or directory (2)

Adjust the pattern for uploading to "all" to only match the -dfu files,
not the new -flash files as discussed with Eric.

Fixes: 412731 ("bl updater app")
Change-Id: I767d3b99840eba5e1b395079c878dcbae78b08a0