package_rpm.bbclass: run pre/post installation scriptlets using sh -e
This allows catching errors in the scriptlets which would otherwise
go unnoticed, e.g. this sequence:
====
bogus_command
proper_command
====
would work just fine. Note that this patch needs all of the preceding
patches, as otherwise running failing scriptlets with -e would defer
them to first boot, instead of properly reporting failure and aborting
the package installation.
Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
