Consistently use camelCase in Gerrit Client

In the Gerrit Client classes that represent the JSON entities
retrieved from the server we have a mix of camelCase and
underscore_case method names. Make it consistent by always using
camelCase.

Change-Id: I5ba3a0e52bbfc6d1b9d224461b8a45952ab93b3a
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
64 files changed