Create resource_name parameter in az_datafactory

[jflima]

Currently in az_datafactory, resource name is the same as target name. In this case we should either:

• have a single BUILD.bazel file and use different different names for the same artifacts in each environment (e.g. EvencardEDI_dev, EvencardEDI_prod);
• or have a BUILD file for each environment with same name for artifacts in each environment.

Ideally, we'd prefer to have a single BUILD file from which we can build all targets needed (DEV, ENG, PROD) an set the same names corresponding artifacts in DEV and PROD Data Factory. We then suggest a new parameter resource_name in az_datafactory that would be the name of the artifact in ADF, as follows:

az_datafactory(
    name = "dev_pipeline",
    resource_name = env_properties.get("PIPELINE_NAME")
    config = ":config",
    factory_name = env_properties.get("DATA_FACTORY_NAME"),
    resource = "pipeline",
    resource_group = env_properties.get("RESOURCE_GROUP"),
    template = ":pipeline.json",
)