sap_ha_install_anydb_ibmdb2: experimental new role

[sean-freeman]

sap_ha_install_anydb_ibmdb2 is necessary due to GPL Linux Pacemaker Resource Agents included only with the IBM Db2 installation media and specific setup commands (notably db2cm) required for IBM Db2 Support - setup commands which fully duplicate and are incompatible with the sap_ha_pacemaker_cluster Ansible Role

[sean-freeman]

This is no longer a draft, it is Experimental (labelled as such in README) with working code tested on MS Azure. Suggest this is now merged.

[berndfinger]

@sean-freeman Please insert the following line as the first line for all yml files:

# SPDX-License-Identifier: Apache-2.0

so that the role already follows our new standard of having SPDX compliant headers.

[berndfinger]

LGTM.