samba: fix QA warnings.

V2:
Fix
WARN: samba: samba rdepends on libarchive, but it isn't a build dependency?

V1:
WARNING: samba-4.4.2-r0 do_package_qa: QA Issue: samba rdepends on libaio, but it isn't a build dependency, missing libaio in DEPENDS or PACKAGECONFIG? [build-deps]
WARNING: samba-4.4.2-r0 do_package_qa: QA Issue: samba rdepends on lttng-ust, but it isn't a build dependency, missing lttng-ust in DEPENDS or PACKAGECONFIG? [build-deps]

Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>