Add python3-setuptools package

Signed-off-by: Adam Israel <adam.israel@canonical.com>
diff --git a/jenkins/SO/install b/jenkins/SO/install
index e96beab..5a02ab0 100755
--- a/jenkins/SO/install
+++ b/jenkins/SO/install
@@ -138,6 +138,6 @@
     rw.core.mano-rwcal-plugin-mock
 
 # Install libjuju
-apt-get install -y python3-pip
+apt-get install -y python3-pip python3-setuptools
 
 pip3 install juju