Avoid panic when ip_configuration data on firewall is null

[mdaguete]

When ipConfigurations data is null on azure firewall steampipe throwns an error:

   ERROR:  rpc error: code = Unknown desc = failed to populate column
'ip_configurations': rpc error: code = Internal desc = transform
ipConfigurationData failed with panic runtime error: invalid memory
address or nil pointer dereference

A json dump of the firewall resource shows:

  "ipConfigurations": null

Integration test logs

Logs

Add passing integration test logs here

Example query results

Results

Add example SQL query results here (please include the input queries as well)

[misraved]

Welcome to Steampipe @mdaguete and thanks for identifying the bug and raising this PR 👍.

The solution looks good, could you please add a comment highlighting the reason for the change?

[mdaguete]

Hi @misraved ,

The main reason is to avoid the panic error when querying a resource with unfinished configuration and break some complex queries that refers to firewall resources.

Regards.

[misraved]

@mdaguete thanks once again for the fix. I have left simple feedback to add in a comment for the change 👍.

The rest of the changes look good 😄 .