Fix backwards compatibility in google-api-client

[sduskis]

#543 broke backwards compatibility. (see here for the ripple effect).

#543 broke apart google-api-client into two packages, but removed some public classes. That type of change requires a major semver change.

In the short term, we need to add a dependency in google-http-client to google-http-client-apache to preserve backwards compatibility until we have a major new release of google-http-client.

[sduskis]

First attempt by adding the dependency:

[ERROR] [ERROR] The projects in the reactor contain a cyclic reference: Edge between 'Vertex{label='com.google.http-client:google-http-client-apache:2.0.1-SNAPSHOT'}' and 'Vertex{label='com.google.http-client:google-http-client:1.28.1-SNAPSHOT'}' introduces to cycle in the graph com.google.http-client:google-http-client:1.28.1-SNAPSHOT --> com.google.http-client:google-http-client-apache:2.0.1-SNAPSHOT --> com.google.http-client:google-http-client:1.28.1-SNAPSHOT @

[elharo]

It looks like there's also a 2.0.0 version of google-http-client-apache. Could we simply revert #543 for 1.29.0?

[sduskis]

I think that we'd have to:

1. maintain an empty(ish) jar for the new artifact and move the .java files and dependencies back to the original artifact.
2. release 1.29.0
3. revert the change and release a new 2.*