Description of problem: After testing on the CU side, the settings found here: https://github.com/grafana/loki/issues/4204, specifically;

retention_period: 72h
enforce_metric_name: false
reject_old_samples: true
reject_old_samples_max_age: 168h
max_cache_freshness_per_query: 10m
split_queries_by_interval: 15m

1. for big logs tune
   per_stream_rate_limit: 512M
   per_stream_rate_limit_burst: 1024M
   cardinality_limit: 200000
   ingestion_burst_size_mb: 1000
   ingestion_rate_mb: 10000
   max_entries_limit_per_query: 1000000
   max_label_value_length: 20480
   max_label_name_length: 10240
   max_label_names_per_series: 300

Helped in completely eliminating the 429 errors that were filling the logs since install. The CU would like to make a case to instill these as the 'default' settings.

Version-Release number of selected component (if applicable): 

Loki Operator 5.7

How reproducible: Easy

Steps to Reproduce:
1. Setup Openshift Lab
2. Install Loki Operator 
3. Using default Loki Config, setup log fowarding and review operator logs

Actual results: Logging works, but 429 errors are frequent

Expected results: Very limited/completely absent of 429 errors in logs on base install

Additional info: Related SF Case 03565373