Consolidate cluster to specs

What's Changed

• Follow SUSE docs for aws+gcp order configuration by @BillAnastasiadis in #288
• Fix azure sbd stonith-timeout and add concurrent-fencing by @BillAnastasiadis in #290
• Add support for additional module registration by @BillAnastasiadis in #289
• Remove gcp_credentials_file variable at module level by @mpagot in #292
• Run extension registration independently by the initial main image registration status by @mpagot in #293
• Add alternative authenticated module task by @BillAnastasiadis in #295
• Split task file cluster-bootstrap in two: AWS+GCP by @lilyeyes in #296
• If registration is needed check that reg_code is provided by @mpagot in #298
• Remove bsc1224797 workaround for 15sp6 by @mpagot in #299

Full Changelog: v0.33.0...v0.34.0