fix(terraform): fix child modules parse tfplan file

[nirfirefly]

Closes #7265

Reason for Proposed Changes

• When pasrsing tfplan file: If there are child modules, each child module overrides the resources in the module above it

Proposed Changes

• initialize the resource map only once
• use address as resource identifier, as the name is only unique in a module.

I submit this contribution under the Apache-2.0 license.