Servicebot changes

[hk10111]

These changes are brought in by servicebot The changes include:

fix docker tag for latest on dockerhub, the if clause has been fixed removal of checks for beta releases support for versioned branches (7.0.16) skip dependency checks

[confluent-cla-assistant[bot]]

:tada: All Contributor License Agreements have been signed. Ready to merge.
_{Please push an empty commit if you would like to re-run the checks to verify CLA status for all contributors.}

[cla-assistant[bot]]

All committers have signed the CLA.

[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}