sap_*_preconfigure/Suse: Rework of preconfigure roles for Suse, add missing notes.

[marcelmamula]

Description

Rework of all preconfigure roles to improve preconfiguration on Suse systems.

Common changes across all 3 roles:

1. Split var files and update with correct packages for each product. Remove unnecessary obsolete packages and SAP patterns from base SLES.
2. Add support for SLES_SAP_16 - WIP version.
3. Rework all assert- code to reflected updated tasks.
4. Add generic tasks for: saptune install and takeover, GRUB updates
5. Add handling for packagekit.service which blocks zypper on systems with enabled SLE-Module-Desktop-Applications
6. Fix default empty variables with correct [] or {}

sap_general_preconfigure specific

1. Add 2578899 - SUSE Linux Enterprise Server 15: Installation Note

sap_hana_preconfigure specific:

1. Remove 1275776 - Linux: Preparing SLES for SAP environments - it is part of saptune generic tasks.
2. Rework 1944799 - SAP HANA Guidelines for SLES Operating System Installation to remove hardcoded obsolete packages.
3. Remove 2578899 - SUSE Linux Enterprise Server 15: Installation Note - its part of sap_general_preconfigure
4. Rework 2684254 - SAP HANA DB: Recommended OS settings for SLES 15 / SLES for SAP Applications 15

sap_netweaver_preconfigure

1. Add some variables that are in sap_general_preconfigure and sap_hana_preconfigure
2. Add handlers file, same as sap_general_preconfigure and sap_hana_preconfigure
3. Change input package variable to correct sap_netweaver_preconfigure_packages
4. Remove 1275776 - Linux: Preparing SLES for SAP environments - it is part of saptune generic tasks.

Test results

All 3 roles were tested on following systems and platforms:

• SLES 15 SP 5 on SUSE Rancher VM
• SLES 15 SP 6 on SUSE Rancher VM
• SLES_SAP 15 SP 5 on AWS and SUSE Rancher VM
• SLES_SAP 15 SP 6 on AWS and SUSE Rancher VM