Route balancing using jumping consistent hashing algorithm (#2215)

[pdorofiejczyk]

1. Added new balancing algorithm (detailed explanation in Route selection/balancing algorithm #2215)
2. Added configuration option domain_balancing_algorithm with possible values: dynamic, fix_number and consistent_hashing where:

• dynamic behaves like in situation when domain_balancing_component_number has not been set
• fix_number behaves like in situation when domain_balancing_component_number has been set
• consistent_hashing is the new algorithm explained in Route selection/balancing algorithm #2215

3. When domain_balancing_algorithm is not set, fallback to domain_balancing_component_number logic is used

[p1bot]

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[p1bot]

You did it @pdorofiejczyk!

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[Neustradamus]

@pdorofiejczyk: Can you rebase your PR, it will be nice to see this improvement merged...