sofaboot-dependencies should only have lookout starters and lookout registry extensions

[khotyn]

Current sofaboot-dependencies have a lot of lookout dependencies, such as lookout-common, lookout-api and etc.

When user want to change the lookout version, he can't just change the the lookout starter version but also have to add all the lookout dependencies.

Otherwise, will result in the following situation, for example:

Change the project's lookout version to a snapshot version:

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alipay.sofa.lookout</groupId>
        <artifactId>lookout-sofa-boot-starter</artifactId>
        <version>1.5.2-SNAPSHOT</version>
    </dependency>
    <dependency>
        <groupId>com.alipay.sofa.lookout</groupId>
        <artifactId>lookout-reg-prometheus</artifactId>
        <version>1.5.2-SNAPSHOT</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

The dependencies of the project will be:

which could cause NoSuchMethodError or other problem.