Installation of iptables was implemented in environment preparation pipeline and tests
do not need to worry about it.
Removed conditions that were checking pytest mode vs robot mode, because we got rid of
robot tests in this branch of codebase.
Signed-off-by: Vladimir Domnich <v.domnich@yadro.com>
Remove logic that checks for root login and prepends command with sudo, because
we should not use root login at all and all commands (that require higher permissions
should be prefixed with sudo anyways).
Add sudo prefix to privileged commands that require it.
Signed-off-by: Vladimir Domnich <v.domnich@yadro.com>
