Make Gradle plugin configurable from build.gradle

[kstenerud]

The Gradle plugin can now be configured via the DSL in a client's build.gradle:

bitdrift {
    instrumentation {
        automaticOkHttpInstrumentation = true
        okHttpInstrumentationType = PROXY
    }
}

This allows clients to use the plugin for upload tasks (bdUpload and friends) without requiring that their app gets byte code manipulated for OkHttp instrumentation.

Configurable values:

• automaticOkHttpInstrumentation: Modify the app byte code to auto-instrument all OkHttp requests: true, false (default)
• okHttpInstrumentationType: How to instrument the calls: OVERWRITE, PROXY (default)

Note: This changes the default behavior. Automatic OkHttp instrumentation now defaults to disabled.

These changes will need to be documented for customers.

---

I used the example app in the gradle directory to test these changes:

In platform/jvm:

$ ./gradlew -Pversion=0.16.7 publishToMavenLocal

gradle/settings.gradle:

pluginManagement {
    repositories {
        mavenLocal()
        ...
    }
}

gradle/app/build.gradle:

plugins {
   ...
    id 'io.bitdrift.capture-plugin' version '0.16.7'
}

...

bitdrift {
    instrumentation {
        automaticOkHttpInstrumentation = false
        okHttpInstrumentationType = PROXY
    }
}

[FranAguilera]

before merging, could you add some verification steps on pr description?

Note: This changes the default behavior. Automatic OkHttp instrumentation now defaults to disabled.

Regarding this ^ should we also notify customers/update docs regarding this change?