Ubuntu columnstoreClusterTester.sh incorrectly raises issue for snappy package

The package on ubuntu is called libsnappy-dev, not snappy.

./columnstoreClusterTester.sh 'options'

• • • This is the MariaDB Columnstore Cluster System test tool ***

• • Validate local OS is supported

Local Node OS System Name : Ubuntu 16.04.3 LTS

• • Run MariaDB ColumnStore Dependent Package Check

Failed, Local Node package snappy is not installed, please install
Failed, Local Node package libdbd-mysql-perl is not installed, please install

Failure occurred, do you want to continue? (y,n) > y

• • • Finished Validation of the Cluster, Failures occurred. Check for Error/Failed test results ***