sanity.bbclass: bblayers.conf should be updated automatically
- add check_bblayers_conf bitbake function which does the bblayers.conf
v4 -> v5 update if necessary (every layer should make its specific
bblayers.conf upgrades appending to the check_bblayers_conf function)
- we ask the user to re-run bitbake because we can't trigger reparsing
without being invasive
[YOCTO #3082]
Signed-off-by: Constantin Musca <constantinx.musca@intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com>
