'In order to determine which packaging system to use, check to see if
/usr/bin/apt exists on the node, and use apt if it exists. Otherwise
test to see if /usr/bin/yum exists and use that.'

@property
def package_provider(self):

    if self.ssh.isfile('/usr/bin/apt-get'):
        return 'apt'
    elif self.ssh.isfile('/usr/bin/yum'):
        return 'yum'
