(maint) Release mergeback v11.0.1

The puppetlabs/resource_api module was used for puppet5 to install the
puppet-resource_api gem. With puppet6 and later this is not necessary
anymore.

Remove puppet5-specific resource_api module dependency

#1374)

This PR covers a few changes:
* Replace Travis and Appveyor with Github Actions
* Repair spec tests
* Remove debian from testing process
* Replace lsbdistcodename with operatingsystemmajrelease in order to avoid warning
* PDK update
* Add lsb-release dependency

Percona no longer includes the generic package name 'percona-xtrabackup' in their Ubuntu 20.04 focal fossa release of percona-xtrabackup. The package name 'percona-xtrabackup-24' must be used instead. This can be verified in the package names included by percona-release, listed at https://repo.percona.com/apt/dists/focal/main/binary-amd64/Packages

Disabling temporarily due to the following known issue: https://tickets.puppetlabs.com/browse/IAC-1612

(maint) Disabling Ubuntu20.04 testing

Update xtrabackup package name for Ubuntu 20.04

The package python-mysqldb doesn't exist in Bullseye anymore.

(bugfix) - Pull python3-mysqldb in Debian Bullseye

pdksync - (maint) PDKSync - PDK Update

Release prep v11.0.2