Fix ddev snmp generate-profile-from-mibs to use modern metric_tags fields (#23543)

* Fix snmp generate-profile-from-mibs to use modern metric_tags symbol field

The ddev meta snmp generate-profile-from-mibs command was emitting
table metric tags using the deprecated `column` field, which the SNMP
Profile Manager rejects on upload. Switch to the modern `symbol` field
per the MetricTagConfig schema in datadog-agent's profiledefinition.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* Rename changelog fragment to match PR number

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* Accept `symbol` in TableColumnHasTagValidator

The schema in datadog-agent's profiledefinition deprecated `column` in
favour of `symbol` for table metric tags. Extend the local
validate-profile validator so profiles using the modern `symbol` field
are not flagged as missing tags.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Pierre-L42

datadog_checks_dev/changelog.d/23543.fixed

@@ -0,0 +1 @@
+Make `generate-profile-from-mibs` emit `symbol` instead of the deprecated `column` field on table metric tags, and accept `symbol` in `validate-profile`.

datadog_checks_dev/datadog_checks/dev/tooling/commands/meta/snmp/generate_profile.py

@@ -639,17 +639,17 @@ def _add_profile_row_node(
             oid_name = alias['name']
 
         index = {'MIB': mib, 'tag': oid_name}
-        column = {'name': oid_name}
+        symbol = {'name': oid_name}
         index_oid = _find_oid_by_name(mib, oid_name, mibs_directories, json_mib_directory, source, compiled_mibs_path)
         if index_oid is not None:
-            column['OID'] = index_oid
+            symbol['OID'] = index_oid
             index_table_oid = '.'.join(index_oid.split('.')[:-2])
             index_table_name = _find_name_by_oid(
                 mib, index_table_oid, mibs_directories, json_mib_directory, source, compiled_mibs_path
             )
             if index_table_name is not None:
                 index['table'] = index_table_name
-        index['column'] = column
+        index['symbol'] = symbol
         metric_tags.append(index)
 
     profile_oid_collection[table_oid]['metric_tags'] = metric_tags

datadog_checks_dev/datadog_checks/dev/tooling/commands/meta/snmp/validators/validator.py

@@ -271,7 +271,7 @@ def validate(self, profile, path):
                     if not all_metric_tags_are_valid:
                         self.fail(
                             "metric_tables defined in lines {} are not valid. \
-                        \nmetric_tags must have 'column' or 'index' value".format(lines)
+                        \nmetric_tags must have 'symbol', 'column' or 'index' value".format(lines)
                         )
 
         if not self.result.failed:
@@ -281,7 +281,7 @@ def check_metric_tags_are_valid(self, metric_tags):
         all_tags_are_valid = True
         lines = []
         for metric_tag in metric_tags:
-            if not (metric_tag.get('column') or metric_tag.get('index')):
+            if not (metric_tag.get('symbol') or metric_tag.get('column') or metric_tag.get('index')):
                 all_tags_are_valid = False
                 lines.append(metric_tag.get('__line__'))