fix: Remove dbusename and dbpassword inputs from get_connection_string

[cveticm]

Proposed Changes

We shouldn't expose the database username and password to an LLM by passing it along as inputs.

• Removes dbUsername and dbPassword as inputs for get_connection_string
  • Replaces GetConnectionStringOptions with just passing the remaining input container_id_or_name directly
• Gets dbusername and dbpassword within get_connnection_string by reusing logic in get_deploymnet_id
• Adjusts testing

[coveralls]

Pull Request Test Coverage Report for Build 18165422202

Details

• 66 of 67 (98.51%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.816%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/client/get_mongodb_secret.rs	21	22	95.45%

Totals
Change from base Build 18001852096:	0.0%
Covered Lines:	3247
Relevant Lines:	3253

---

💛 - Coveralls

[jeroenvervaeke]

Can we move this function to a separate file?
It doesn't necessarily belong in get_connection_string.rs or get_deployment_id.rs.
Maybe it would make more sense to move this to a new get_mongodb_secret file.

[cveticm]

Good point, moved 👍