Add APM obfuscation env vars

[sbward]

Describe what happened:

There are several APM obfuscation options that are not available as env vars:

apm_config.obfuscation.elasticsearch.enabled
apm_config.obfuscation.elasticsearch.keep_values
apm_config.obfuscation.elasticsearch.obfuscate_sql_values
apm_config.obfuscation.mongodb.enabled
apm_config.obfuscation.mongodb.keep_values
apm_config.obfuscation.mongodb.obfuscate_sql_values
apm_config.obfuscation.sql_exec_plan.enabled
apm_config.obfuscation.sql_exec_plan.keep_values
apm_config.obfuscation.sql_exec_plan.obfuscate_sql_values
apm_config.obfuscation.sql_exec_plan_normalize.enabled
apm_config.obfuscation.sql_exec_plan_normalize.keep_values
apm_config.obfuscation.sql_exec_plan_normalize.obfuscate_sql_values
apm_config.obfuscation.http.remove_query_string
apm_config.obfuscation.http.remove_paths_with_digits
apm_config.obfuscation.remove_stack_traces
apm_config.obfuscation.redis.enabled
apm_config.obfuscation.memcached.enabled

Describe what you expected:

We need to use these options in containerized environments where we use env vars to configure the agent. The env var names should probably follow the pattern DD_APM_OBFUSCATION_*. For example, DD_APM_OBFUSCATION_REMOVE_STACK_TRACES would correspond to apm_config.obfuscation.remove_stack_traces.

Steps to reproduce the issue:

Attempting to use env var names for obfuscation doesn't set the option.

For example, in a Fargate task, the following doesn't work.

"environment": [
        {
                "name": "DD_APM_OBFUSCATION_REMOVE_STACK_TRACES",
                "value": "true"
        },
        // ... other env vars ...
],

Additional environment details (Operating System, Cloud provider, etc):

We use Fargate but this applies for any environment where env vars are preferred over datadog.yaml

[sujeets-toast]

I configured the datadog with ecs fargate. But in url digits value replaced by ? How can I disabled the remove_paths_with_digits using ecs fargate datadog in aws. What is the environment variable name?

[dsambugaro]

Any updates on that?

[ammmr]

Do you have any work on this issue?