Maven Model Merger is messing with properties order in Codestarts

[ia3andy]

Description
properties are set in a specific order in the templates:

<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <maven.compiler.source>{java.version}</maven.compiler.source>
        <maven.compiler.target>{java.version}</maven.compiler.target>
        <maven.compiler.parameters>true</maven.compiler.parameters>

        <quarkus.platform.group-id>{quarkus.platform.group-id}</quarkus.platform.group-id>
        <quarkus.platform.artifact-id>{quarkus.platform.artifact-id}</quarkus.platform.artifact-id>
        <quarkus.platform.version>{quarkus.platform.version}</quarkus.platform.version>
        <quarkus-plugin.version>{quarkus.maven-plugin.version}</quarkus-plugin.version>
        <compiler-plugin.version>{maven-compiler-plugin.version}</compiler-plugin.version>
        <surefire-plugin.version>{maven-surefire-plugin.version}</surefire-plugin.version>
    </properties>

then when merged, it ends up with something like:

<properties>
    <quarkus.platform.version>1.8.0.CR1</quarkus.platform.version>
    <scala-maven-plugin.version>4.1.1</scala-maven-plugin.version>
    <quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
    <compiler-plugin.version>3.8.1</compiler-plugin.version>
    <surefire-plugin.version>2.22.1</surefire-plugin.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.parameters>true</maven.compiler.parameters>
    <maven.compiler.source>11</maven.compiler.source>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <maven.compiler.target>11</maven.compiler.target>
    <scala.version>2.12.8</scala.version>
    <quarkus-plugin.version>1.8.0.CR1</quarkus-plugin.version>
    <quarkus.platform.group-id>io.quarkus</quarkus.platform.group-id>
  </properties>

I think it should just append the properties when merging (not reordering).

CC @gastaldi this is using the smart model merger.

[quarkusbot]

/cc @quarkusio/devtools

[gastaldi]

I'll have a look