Include Prebuilt jar's transitiveClasspath when building the javaplugin properties

Created by: raviagarwal7

PrebuiltJar has deps which is exported by default. Include it’s transitiveClasspath when building the javaplugin properties (https://github.com/facebook/buck/blob/master/src/com/facebook/buck/jvm/java/AbstractJavacPluginProperties.java#L97).

Previously: With rules defined below dagger processor will only have javaDep and firstLevelPrebuilt in its classpath.

After: With rules defined below dagger processor will only have javaDep, firstLevelPrebuilt and transitivePrebuilt as well. Same is the behaviour if the prebuilt is added as a dependency to a java library since deps of prebuilt are exported by default.

java_annotation_processor(
    name = 'dagger',
    deps = [
         '//:javaDep',
         '//lib/firstLevelPrebuilt'
     ]
)

prebuilt_jar(
    name = 'firstLevelPrebuilt'
    deps = [
        '//lib:transitivePrebuilt'
    ]
)

prebuilt_jar(
    name = 'transitivePrebuilt'
)

Added Tests.