add consul as registry option

[wkloucek]

Description

adds consul as registry option (helpful for HashiCorp environments like Nomad)

Related Issue

Motivation and Context

How Has This Been Tested?

Run a consul:

  consul:
    image: consul:latest
    command: consul agent -dev -client 0.0.0.0
    ports:
      - "8500:8500"
      - "8600:8600/udp"

use the consul registry in oCIS:

      MICRO_REGISTRY: consul
      MICRO_REGISTRY_ADDRESS: consul:8500

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[sonarcloud]

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