fix: make google-http-client.properties file shading friendly

[medb]

Fixes an issue when there are 2 versions of this library in a class path - 1) shaded/relocated library of x.x.x version inside a "jar-with-dependencies" and 2) non-shaded library of y.y.y version.

Because both of these libraries will load non-shaded google-http-client.properties file they will use the same y.y.y version even though shaded library has a x.x.x version.

[BenWhitehead]

@medb Can you describe why this change is needed? The properties file should be able to be loaded from an uber-jar or other shaded jar just fine without modification.

I have a local project on my machine I used to execute a few commands against Firestore (which is a downstream consumer of this library). This project is packaged as a "jar-with-dependencies" file. HttpRequest is able to load the properties files successfully as-is.

❱ java -jar target/cleanup-0.1.1-SNAPSHOT-jar-with-dependencies.jar 
HttpRequest.VERSION = 1.34.2

From this code

public static void main(String[] args) {
  System.out.println("HttpRequest.VERSION = " + com.google.api.client.http.HttpRequest.VERSION);
}

[medb]

@BenWhitehead The issue is that if there are 2 versions of this library in a class path - 1) shaded/relocated library of x.x.x version inside a "jar-with-dependencies" and 2) non-shaded library of y.y.y version.

Because both of these libraries will load non-shaded google-http-client.properties they will use the same y.y.y version even though shaded library has a x.x.x version.

[BenWhitehead]

@chingor13 What are you thoughts here on moving the properties file? We might need to move it for the couple other libraries we introduced this same pattern in.