BFD-3684: Some processes are failing to run as they reference old BFD Server database parameters

[malessi]

JIRA Ticket:
BFD-3684

What Does This PR Do?

This PR updates old references to two BFD Server DB-related SSM parameters in various Python scripts used by Lambdas and other processes; most importantly, this fixes the Regression Suite.

What Should Reviewers Watch For?

If you're reviewing this PR, please check for these things in particular:

What Security Implications Does This PR Have?

Please indicate if this PR does any of the following:

• Adds any new software dependencies

• Modifies any security controls

• Adds new transmission or storage of data

• Any other changes that could possibly affect security?

• I have considered the above security implications as it relates to this PR. (If one or more of the above apply, it cannot be merged without the ISSO or team security engineer's (@sb-benohe) approval.)

Validation

Have you fully verified and tested these changes? Is the acceptance criteria met? Please provide reproducible testing instructions, code snippets, or screenshots as applicable.

• Searching the repository for data_server_db_username and data_server_db_password, verifying that there are no further code usages
• Using the aws ssm CLI to pull each new parameter, verifying that the path is correct and a value is returned