improvement(scylla-bench): bump version to v0.1.21

It uses the most recent gocql version - v1.14.1

defaults/test_default.yaml

@@ -209,7 +209,7 @@ stress_image:
   ycsb: 'scylladb/hydra-loaders:ycsb-jdk8-20220918'
   nosqlbench: 'scylladb/hydra-loaders:nosqlbench-4.15.49'
   cassandra-stress: 'scylladb/scylla:5.4.6' # empty default would be same version as scylla under test
-  scylla-bench: 'scylladb/hydra-loaders:scylla-bench-v0.1.20'
+  scylla-bench: 'scylladb/hydra-loaders:scylla-bench-v0.1.21'
   gemini: 'scylladb/hydra-loaders:gemini-v1.8.6'
   alternator-dns: 'scylladb/hydra-loaders:alternator-dns-0.1'
   cdc-stresser: 'scylladb/hydra-loaders:cdc-stresser-20210630'

docs/configuration_options.md

@@ -339,7 +339,7 @@
 | **<a href="#user-content-nemesis_multiply_factor" name="nemesis_multiply_factor">nemesis_multiply_factor</a>**  | Multiply the list of nemesis to execute by the specified factor | 6 | SCT_NEMESIS_MULTIPLY_FACTOR
 | **<a href="#user-content-raid_level" name="raid_level">raid_level</a>**  | Number of of raid level: 0 - RAID0, 5 - RAID5 | N/A | SCT_RAID_LEVEL
 | **<a href="#user-content-bare_loaders" name="bare_loaders">bare_loaders</a>**  | Don't install anything but node_exporter to the loaders during cluster setup | N/A | SCT_BARE_LOADERS
-| **<a href="#user-content-stress_image" name="stress_image">stress_image</a>**  | Dict of the images to use for the stress tools | {'ndbench': 'scylladb/hydra-loaders:ndbench-jdk8-20210720', 'ycsb': 'scylladb/hydra-loaders:ycsb-jdk8-20220918', 'nosqlbench': 'scylladb/hydra-loaders:nosqlbench-4.15.49', 'cassandra-stress': 'scylladb/scylla:5.4.6', 'scylla-bench': 'scylladb/hydra-loaders:scylla-bench-v0.1.20', 'gemini': 'scylladb/hydra-loaders:gemini-v1.8.6', 'alternator-dns': 'scylladb/hydra-loaders:alternator-dns-0.1', 'cdc-stresser': 'scylladb/hydra-loaders:cdc-stresser-20210630', 'kcl': 'scylladb/hydra-loaders:kcl-jdk8-20210526-ShardSyncStrategyType-PERIODIC', 'harry': 'scylladb/hydra-loaders:cassandra-harry-jdk11-20220816', 'latte': 'scylladb/hydra-loaders:latte-0.25.2-scylladb', 'cql-stress-cassandra-stress': 'scylladb/hydra-loaders:cql-stress-cassandra-stress-20240119'} | SCT_STRESS_IMAGE
+| **<a href="#user-content-stress_image" name="stress_image">stress_image</a>**  | Dict of the images to use for the stress tools | {'ndbench': 'scylladb/hydra-loaders:ndbench-jdk8-20210720', 'ycsb': 'scylladb/hydra-loaders:ycsb-jdk8-20220918', 'nosqlbench': 'scylladb/hydra-loaders:nosqlbench-4.15.49', 'cassandra-stress': 'scylladb/scylla:5.4.6', 'scylla-bench': 'scylladb/hydra-loaders:scylla-bench-v0.1.21', 'gemini': 'scylladb/hydra-loaders:gemini-v1.8.6', 'alternator-dns': 'scylladb/hydra-loaders:alternator-dns-0.1', 'cdc-stresser': 'scylladb/hydra-loaders:cdc-stresser-20210630', 'kcl': 'scylladb/hydra-loaders:kcl-jdk8-20210526-ShardSyncStrategyType-PERIODIC', 'harry': 'scylladb/hydra-loaders:cassandra-harry-jdk11-20220816', 'latte': 'scylladb/hydra-loaders:latte-0.25.2-scylladb', 'cql-stress-cassandra-stress': 'scylladb/hydra-loaders:cql-stress-cassandra-stress-20240119'} | SCT_STRESS_IMAGE
 | **<a href="#user-content-scylla_network_config" name="scylla_network_config">scylla_network_config</a>**  | Configure Scylla networking with single or multiple NIC/IP combinations.<br>It must be defined for listen_address and rpc_address. For each address mandatory parameters are:<br>- address: listen_address/rpc_address/broadcast_rpc_address/broadcast_address/test_communication<br>- ip_type: ipv4 or ipv6<br>- public: false or true<br>- nic: number of NIC. 0, 1<br>Supported for AWS only meanwhile | N/A | SCT_SCYLLA_NETWORK_CONFIG
 | **<a href="#user-content-enable_argus" name="enable_argus">enable_argus</a>**  | Control reporting to argus | True | SCT_ENABLE_ARGUS
 | **<a href="#user-content-cs_populating_distribution" name="cs_populating_distribution">cs_populating_distribution</a>**  | set c-s parameter '-pop' with gauss/uniform distribution for<br>performance gradual throughtput grow tests | N/A | SCT_CS_POPULATING_DISTRIBUTION