package_rpm.bbclass: Fix incremental rpm image generation
Fix the incremental rpm image generation, it didn't work since the code
has been changed.
The btmanifest should have a ".manifest" suffix, so that it can be moved
to ${T} by rootfs_rpm.bbclass:
mv ${IMAGE_ROOTFS}/install/*.manifest ${T}/
Note: The locale pkgs would always be re-installed.
[YOCTO #2690]
(From OE-Core rev:
5149630746626c6d416f26ab9dd1c7213fcd8c50)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
