Add helidon-config-yaml-mp to helidon-microprofile-config

[klustria]

Environment Details

• Helidon Version: 2.5.1 and 3
• Helidon MP

---

Problem Description

After adding #4218 and #4254 into 2.x and 3.x respectively, to add Hocon/Json MP support and make Meta-Config extensible, helidon-config-yaml-mp is not part of helidon-microprofile-configbecause it was decoupled from helidon-config-mp which is a part of that config bundle. The tests did not catch this because mostly, we mostly include helidon-microprofile-server which loads it indirectly via helidon-microprofile-cdi. Using bundles like helidon-microprofile or helidon-microprofile-core won't have this issue because helidon-config-yaml-mp will be indirectly included via helidon-microprofile-server. However if helidon-microprofile-config is only used without helidon-microprofile-server then there may be a backward incompatibility, but I'm not even sure if such a scenario exist.

[klustria]

Workaround (for now, add this as a dependency):

        <dependency>
             <groupId>io.helidon.config</groupId>
             <artifactId>helidon-config-yaml-mp</artifactId>
         </dependency>

In the future (2.5.2 onwards), use:

        <dependency>
            <groupId>io.helidon.microprofile.config</groupId>
            <artifactId>helidon-microprofile-config</artifactId>
        </dependency>

as mentioned in the MP config doc: https://helidon.io/docs/v2/#/mp/config/01_introduction

Furthermore, this should not be a problem if any of the following dependencies is used: helidon-microprofile-server or helidon-microprofile-cdi or any of the helidon bundles: (helidon-microprofile or helidon-microprofile-core).

[klustria]

• Add helidon-config-yaml-mp as a dependency in helidon-microprofile-config #4379 - resolves this issue in 3.x
• Add helidon-config-yaml-mp as a dependency in helidon-microprofile-config. (#4379) #4394 - resolves this issue in 2.x (2.5.2)

[klustria]

Going forward, in 2.5.2 and in 3, use below dependency to include all default MicroProfile Config including helidon-config-yaml-mp:

        <dependency>
            <groupId>io.helidon.microprofile.config</groupId>
            <artifactId>helidon-microprofile-config</artifactId>
        </dependency>