python3: add the cassandra driver to the relocatable package

We have a script in tree that fixes the schema for distributed system
tables, like tracing, should they change their schema. We use it all the
time but unfortunately it is not distributed with the scylla package,
which makes it using it harder (we want to do this in the server, but
consistent updates will take a while).

One of the problems with the script today that makes distributing it
harder is that it uses the python3 cassandra driver, that we don't want
to have as a server dependency. But now with the relocatable packages in
place there is no reaso not to just add it.

[avi: adjust tools/toolchain/image to point to a new image with
 python3-cassandra-driver]
Signed-off-by: Glauber Costa <glauber@scylladb.com>
Message-Id: <20190603162447.24215-1-glauber@scylladb.com>

install-dependencies.sh

@@ -60,6 +60,7 @@ fedora_packages=(
     python3-setuptools
     python3-magic
     python3-psutil
+    python3-cassandra-driver
     dnf-utils
     pigz
     net-tools

reloc/python3/build_reloc.sh

@@ -32,5 +32,5 @@ PYVER=$(python3 -V | cut -d' ' -f2)
 echo "$PYVER" > build/python3/SCYLLA-VERSION-FILE
 ln -fv build/SCYLLA-RELEASE-FILE build/python3/SCYLLA-RELEASE-FILE
 
-PACKAGES="python3-pyyaml python3-urwid python3-pyparsing python3-requests python3-pyudev python3-setuptools python3-psutil"
+PACKAGES="python3-pyyaml python3-urwid python3-pyparsing python3-requests python3-pyudev python3-setuptools python3-psutil python3-cassandra-driver"
 ./scripts/create-relocatable-package-python3.py --output "$TARGET" $PACKAGES

tools/toolchain/image

@@ -1 +1 @@
-docker.io/scylladb/scylla-toolchain:fedora-29-20190405
+docker.io/scylladb/scylla-toolchain:fedora-29-20190603