fix/datasource-name-in-templates

[bensaadaCanine]

Datasource should be named DS_PROMETHEUS . Not datasource

Jira Ticket

Include a link to your Jira Ticket
Example: JIRAISS-1234

Demo

Please add a recording of the feature/bug fix in work. if you added new routes, the recording should show the request and response for each new/changed route

Checklist:

• I have filled relevant self assessment (NodeJS, Frontend, Backend)
• I have run ESlint on my changes and fixed all warnings and errors (NodeJS & Frontend Services)
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have validated all the requirements in the Jira task were answered
• I have all neccessary approvals for the design/mini design of this task
• I have approved the API changes and granular permission patterns (documentation subtask) (For public services only)

[mic-goldberg-spot]

@bensaadaCanine can you please share any resource where this requirement is specified.
Or provide an example when using the other than DS_PROMETHEUS name for the variable of the type Data source will lead to broken functionality.

[bensaadaCanine]

@mic-goldberg-spot this is the error I got before this fix: