Added supported parameter varaiable and removed Deprecated ones

[naresh483]

Description

Added below parameter varaiables

• brickflow_job_id = {{job.id}} : The unique identifier assigned to the job.
• brickflow_run_id = {{task.run_id}} : The unique identifier of the current task run.
• brickflow_start_date = {{job.trigger.time.iso_date}} : A value based on the time (in UTC timezone) that the job run was triggered, rounded down to the closest minute for jobs with a cron schedule (Returns the date in ISO format.)
• brickflow_start_time= {{job.trigger.time.iso_datetime}} : A value based on the time (in UTC timezone) that the job run was triggered, rounded down to the closest minute for jobs with a cron schedule (Returns the date and time in ISO format)
• brickflow_task_retry_count= {{task.execution_count}} : The number of times the current task was run (including retries and repairs).
• brickflow_parent_run_id= {{job.run_id}} :The unique identifier assigned to the job run.
• brickflow_task_key = {{task.name}} : The name of the current task.

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[naresh483]

Added below parameter varaiables

• brickflow_job_id = {{job.id}} : The unique identifier assigned to the job.
• brickflow_run_id = {{task.run_id}} : The unique identifier of the current task run.
• brickflow_start_date = {{job.trigger.time.iso_date}} : A value based on the time (in UTC timezone) that the job run was triggered, rounded down to the closest minute for jobs with a cron schedule (Returns the date in ISO format.)
• brickflow_start_time= {{job.trigger.time.iso_datetime}} : A value based on the time (in UTC timezone) that the job run was triggered, rounded down to the closest minute for jobs with a cron schedule (Returns the date and time in ISO format)
• brickflow_task_retry_count= {{task.execution_count}} : The number of times the current task was run (including retries and repairs).
• brickflow_parent_run_id= {{job.run_id}} :The unique identifier assigned to the job run.
• brickflow_task_key = {{task.name}} : The name of the current task.

[asingamaneni]

Can we not just change the BrickflowBuiltInTaskVariables class to something like below and make changes accordingly? This will avoid maintaining the mapping at both places

class BrickflowBuiltInTaskVariables(Enum):
    # key is the {{ }} and value is the key
    brickflow_job_id = "{{job.id}}"
    brickflow_run_id = "{{task.run_id}}"
    ...

[asingamaneni]

@naresh483 do we need to close this pr?