Add destinationrule to allow configuring a trafficpolicy

Istio allows to configure connection pooling and load balancing via destination rule. This MR allows users to configure these settings.

requested review from @shaardie

assigned to @m_blan04

added 1 commit

• 5ea5137c - add destinationrule to allow configuring a trafficpolicy

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approved this merge request

added 2 commits

• 16ddba0d - 1 commit from branch main
• 17545c5f - add destinationrule to allow configuring a trafficpolicy

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merged