osmo-mgw recipe in meta-telephony has been updated to generate several
packages. Right now, osmo-bsc requires osmo-mgw service, but osmo-msc
still requires osmo-bsc-mgcp, so let's add both to the image.
We have some images that need the real wget for upgrades, the SSL
root certificate of CA-Cert but that doesn't use task-sysmocom to
build the image. Move these utilities into the tools task.
First ca-certificates does not create a symlink from /etc/ssl/certs
to /usr/lib/ssl/certs, second it does not run the c_rehash perl utility
making the recipe pretty useless and third it trusts way too many
cert authorities.