add - any annotation processing

[lanwen]

also add e2e tests module to simplify debugging of annotation processor, use props from props-loader 1.5

• Can use any other annotation to process if override system property matcher.gen.annotations.
• Can use multiply annotations comma-separated.

For example we have @Expose annotation (com.google.gson.annotations.Expose) by Gson
and want to generate matchers for fields with such annotation.

We can now:

• Run compilation with

mvn clean install -Dmatcher.gen.annotations=ru.yandex.qatools.processors.matcher.gen.annotations.GenerateMatcher,com.google.gson.annotations.Expose

• Or put in classpath matchers.gen.properties with content

 matcher.gen.annotations=ru.yandex.qatools.processors.matcher.gen.annotations.GenerateMatcher,com.google.gson.annotations.Expose