[JIRA] (OVIRT-2474) Avoid duplicated code for mock runner's shell cmd

Avoid duplicated code for mock runner's shell cmd ------------------------------------------------- Key: OVIRT-2474 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-2474 Project: oVirt - virtualization made easy Issue Type: Improvement Components: mock_runner Reporter: Daniel Belenky Assignee: Daniel Belenky Instead of having to maintain duplicated code for the mock shell command (which is actually what runs in mock), we should store it in a variable.