standardize azure related dag implementation

Type of change

• Bug Fix
• Feature

Does this introduce a change in the core logic?

• [No]

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS
• Azure
• GCP
• IBM

Current Configuration.

• No Azure publish job
• Dag task image naming convention is not uniform with other repositories.
• Docker image is hardcoded in dag zip artifact.

Updates description?

• Add Azure publish job to publish dag task image to msosdu ACR.
• Update dag task image naming convention to make sure it is uniform with other dag repositories.
• Variabilize docker image in azure dag zip artifact, such that image tag is taken from airflow variables.

Related to osdu/platform/ci-cd-pipelines!1044 (merged)