Multiple tests are failing due to missing dependencies on a bare
core-image-minimal build with only lttng-tools ptest present.
"getconf LONG_BIT" is used to get the bitness of the host to run the
correct consumerd. Depend on glibc-utils.
perl-module-overloading is needed to validate trace. babelstats.pl
"head -c" is used to generate a random string. It is easier to depends
on coreutils to get a feature complete "head" than to enable to "fancy
head" feature of busybox. See utils.sh randstring.
"taskset" is used in a couple of scripts to ensure that events generated
finish in the same buffer. Depend on util-linux.
[RP: Tweak for glibc/musl handling] Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>