Fix iptables rules in multiple items in ingress/egress

[s1061123]

This change fixes iptables rules for multiple items in ingress/egress. It also adds e2e tests for that. fix #45

[coveralls]

Pull Request Test Coverage Report for Build 4382139804

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.05%) to 53.475%

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Totals
Change from base Build 4321855473:	0.05%
Covered Lines:	1008
Relevant Lines:	1885

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💛 - Coveralls

[zeeke]

/lgtm

The suite is becoming rock solid!