sap_hana_install: Bug with use_master_password and other passwords

[marcelmamula]

Issue

This was identified during testing of #1122 (it is not caused by this PR).

Current configfile creation does not consider hdblcm restrictions when executing with sap_hana_install_use_master_password: 'y'. This results in issue like this when all passwords are set:

          Master Password cannot be used in combination with other initial passwords
          Mandatory parameter 'password' (Password) is missing or invalid

Solution

Solution is not simple and it needs multi-step approach:

1. Replace current task with enhanced task that will load internal __vars, because current approach is removing any possibility of us intervening with variables due to precedence.

   community.sap_install/roles/sap_hana_install/tasks/pre_install/hdblcm_configfile.yml

   Line 59 in d0ee859

   - name: SAP HANA Pre Install - Create a Jinja2 template from the hdblcm configfile template

2. Add asserts into validation:
   • If sap_hana_install_use_master_password: 'y' then assert master password and load configfile only with master password.
   • if sap_hana_install_use_master_password: 'n' then assert all non-master passwords and load them into configfile, removing master password.

Important

#1122 New comments were added to visibly show which parts need to be enhanced and it is searchable with #1123.