Fix tested-commands for expiration tests

Add missing 'set' command to tested-commands list for 100B expiration tests.
The stats tool detected that these tests use setex, get, and set commands
but only had setex and get listed in the tested-commands section.

Author: fcostaoliveira

redis_benchmarks_specification/test-suites/memtier_benchmark-1Mkeys-string-mixed-50-50-set-get-100B-expire-pipeline-10.yml

@@ -16,6 +16,7 @@ dbconfig:
 tested-commands:
 - setex
 - get
+- set
 tested-groups:
 - string
 redis-topologies:

redis_benchmarks_specification/test-suites/memtier_benchmark-1Mkeys-string-mixed-50-50-set-get-100B-expire.yml

@@ -16,6 +16,7 @@ dbconfig:
 tested-commands:
 - setex
 - get
+- set
 tested-groups:
 - string
 redis-topologies: