[dpp] store enforce_sizes in log name and added generic kwargs to get_default_validation_prefix

[kcirred]

• added new function format_kwargs_to_string for easier conversion of kwargs into string
• introduced kwargs to get_default_validation_prefix in case future variables needs to be added to function
• used additional enforce_sizes variable in dpp in get_validation_info_path to get string with enforce_sizes in log name
• added return_keys to samplers such as sample_rag_factoid_requests and sample_sharegpt_requests, default value False, this allows the returning of a sample_key(str) which contains the exact values used
• in dpp changed sampler inside __prepare_inputs to use return_key True, returning a sample_key which is then used when storing the log name

[JRosenkranz]

Can we add a test utilizing the sampler key for this function

[JRosenkranz]

bot:test
TEST_FILE=test_scripts.py

[JRosenkranz]

lgtm

[JRosenkranz]

bot:test
TEST_FILE=test_decoders.py MODEL_ID=ibm-granite/granite-3.3-8b-instruct BATCH_SIZE=1 SEQUENCE_LENGTH=2048 USE_TINY_MODEL=1