Configuartion and version sections are added to info search

[Shivshankar-Reddy]

Added the configuationa dn version section and updated with the hard coded values for the cases we dont metrics available.

current output provide below info:

# search_runtime_configurations
search_bm25std_tanh_factor:0
search_cursor_max_idle_time:0
search_cursor_read_size:0
search_enableGC:OFF
search_extension_load:
search_friso_ini:
search_gc_scan_size:0
search_max_aggregate_results:0
search_max_doc_table_size:0
search_max_search_results:0
search_maximal_prefix_expansions:0
search_min_phonetic_term_length:0
search_minimal_stem_length:0
search_minimal_term_prefix:0
search_query_timeout_ms:0
search_timeout_policy:
------
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# search_version
search_redis_version:255.255.255
search_version:255.255.255