Don't wait for ACL rules with Broadcom ASICs (sonic-net#1038)

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### Description of PR
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Summary:
With Broadcom ASICs, don't wait for the ACL rule counters to change from
'N/A' to 0 since it isn't needed (and will cause the test to time out
and fail).

### Type of change

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- Fill x for your type of change.
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- [x] Bug fix
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- [ ] Bug fix
- [ ] Testbed and Framework(new/improvement)
- [ ] New Test case
    - [ ] Skipped for non-supported platforms
- [x] Test case improvement

Signed-off-by: Fraser Gordon <[email protected]>

Author: fraserg-arista

tests/everflow/everflow_test_utilities.py

@@ -792,7 +792,7 @@ def apply_non_openconfig_acl_rle(self, duthost, extra_vars, rule_file):
         duthost.template(src=os.path.join(FILE_DIR, rule_file), dest=dest_path)
         duthost.shell("config load -y {}".format(dest_path))
 
-        if duthost.facts['asic_type'] != 'vs':
+        if duthost.facts['asic_type'] not in ['vs', 'broadcom']:
             pytest_assert(wait_until(60, 2, 0, self.check_rule_counters, duthost), "Acl rule counters are not ready")
 
     def apply_ip_type_rule(self, duthost, ip_version):