Modify CircelCI deploys to be done using AWS Roles and AWS OIDC Context about avni-infra

[Balamuruganjeevi]

@himeshr I did the modification of circle-ci config for avni-webapp can you please validate it, after that i will do it for the remaining repo's.

[himeshr]

@himeshr I did the modification of circle-ci config for avni-webapp can you please validate it, after that i will do it for the remaining repo's.

As informed over chat:

• Correct the circle CI context to be CIRCLECI_OIDC_AWS instead of AWS_OIDC
• Modify the Project settings to remove the usage of openchs-infra.pem file from SSH Keys

[Balamuruganjeevi]

@himeshr The modification of CircleCI config is done for the below services repo's, can you please validate it.
* avni-server
* avni-webapp
* rules-server
* avni-media
* integration-service
* etl
* integration-admin-app

[himeshr]

@Balamuruganjeevi Some major guidelines to follow during any code changes:

• Perform the change only in the specific release branch
• Prefix Commit messages with the "avniproject/avni-infra#ID" value always, it helps identify the modifications from this card easily