Switching the dependencies to release versions
This changes the library dependencies to use released versions of the core libraries. They were previously depending on SNAPSHOT versions, which are less stable versions. More importantly, the SNAPSHOT versions are periodically purged from the system to save disk space -- this happened recently. Since these libraries no longer exist on community, building becomes difficult.
This MR moves those dependencies to a release version, which is better going forward and allows FOSSA to do the build and get good dependency information.
For GCP, there were code changes between the latest version of v0.6.0-SNAPSHOT and 0.7.0, but they appear to be additions only. I don't think this will impact compatibility.
For the IBM change, version 0.3.28-SNAPSHOT of os-core-lib-ibm doesn't exist in the repository. As far as I can tell, it was either built on a local system and uploaded directly, or was part of a CI build that was squashed on merge. Either way, I have no reference to know what changes have occurred since then.
Separately, since I was working with FOSSA, I updated the configuration file and the corresponding NOTICE changes resulting from the new module.