sap_hdbsql: Add new parameter named properties

[rbn-st]

Adds a new module option properties to pass key=value pairs to hdbsql via -Z.

Changes

• Added properties parameter to sap_hdbsql module
• Added corresponding unit test
• Added example in EXAMPLES block

[marcelmamula]

@arctix625 Thank you for your contribution.

This change "looks" to be working, but it is difficult to properly test because it seems that hdbsql does not reject wrong inputs.
Even TEST=VALUE is accepted and module is successful returning data.

I am raised new issue in meantime to handle sanitization of parameters so this is fine to have properties same as we have other parameters.

[marcelmamula]

@arctix625 Why are you force pushing commits to appear to have just one commit in this PR?

[rbn-st]

@arctix625 Why are you force pushing commits to appear to have just one commit in this PR?

Sorry, I don't often work with git :(

[marcelmamula]

@arctix625 That is fine for now and I will accept it in current state.
For future reference, you should just create new commit when you are applying proposed changes or fixes coming from workflow failures.

Force push should be reserved only to rare situations when your last commit was not good and you want to replace it, not to replace all commits as one. Imagine deleting some code, then finding out it should be there, or forgetting to remove debug code.

[marcelmamula]

LGTM