Fix rpm metadata clash due to change of rpm backend

Fix rpm metadata clash due to change of rpm backend

The rpm backend used in pyro changed behaviour and if multiple packages 'own' a directory
the installation will fail. Inject a flag to mitigate this and avoid the break.
Conflicting packages libgbm-dev and ti-sgx-ddk-um-dev on /usr/lib/pkgconfig .

Change-Id: I52439d94c230a9314a543e00edd247f29d10e113
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/10927
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>