Curl step: Expose fields from response to use in next steps.

[sumaiyamannan]

This change will expose fields from response to use in next steps.

Currently a curl step response needs to be read via a reader step and probably then it needs to be saved in a file or need other steps to parse the data into variables to be fed in other steps. With this patch, the data parsed and iterated from this single step itself.

Testing instructions

• Create a curl step (connector or flow)
• Add a value in 'Counter field'
• Define variables using the counter field for e.g. access_token: '${{ record.access_token }}'
• Use the above variable in another step for e.g. ${{steps.gettoken.record.access_token}}

See screenshots below for reference
Expose response variables

Consume response variables

In addition, the use of debugging() function in place of moodle_exception will allow logging of curl response in case of failures.

Regards,
Sumaiya