With Thud 2.6.2, some packages are not installed on sdk due to conflict
between provider. The package target-sdk-provides-dummy should not include
all the list: bash-dev and perl-dev generate the issue.
Note that these packages need to be present on SDK due to dependencies.
Change-Id: I5250fb8607d0cb6206b24290955b91d3f4fb74c0
Signed-off-by: Romuald JEANNE <romuald.jeanne@st.com>