Generalise the DS starting script and add it to the itango tools

RandomData-DS.sh

-runThis=$(basename ${0})
-runThis=${runThis//.sh/.py}
-if [ -f ${runThis} ]; then
-    myDir=${PWD}
-else
-    myDir=${PWD}/$(dirname ${0})
-fi
-
-if [ ${#} -eq 1 ]; then
-    instance="${1}"
-else
-    echo "The instance of this device server must be provided!"
-    exit -1
-fi
-containerPath=${myDir//${HOME}\//\/hosthome\/}
-docker exec -it itango python3 ${containerPath}/${runThis} ${instance}