Analyzer - Support regex in annotations of benchmark naming for metrics in rules (#344)

**Description**
 Support regex in annotations of benchmark naming for metrics in rules.
For example:      
metrics:   
 \- model-benchmarks:resnet50:float/.\*/fp16_train_throughput' 
 -> 
 \- 'model-benchmarks:.\*/.\*/fp16_train_throughput'

superbench/analyzer/rule_base.py

@@ -32,6 +32,9 @@ def _get_metrics_by_benchmarks(self, metrics_list):
                 logger.warning('RuleBase: get_metrics_by_benchmarks - {} does not have benchmark_name'.format(metric))
             else:
                 benchmark = metric.split('/')[0]
+                # support annotations in benchmark naming
+                if ':' in benchmark:
+                    benchmark = metric.split(':')[0]
                 if benchmark not in benchmarks_metrics:
                     benchmarks_metrics[benchmark] = set()
                 benchmarks_metrics[benchmark].add(metric)