[Heartbeat] Alias http.url.raw to url.full

[andrewvc]

Continues the work in #9570 , aliasing this field for convenience.
In ECS this field is already a keyword, so this should be fine.

[ruflin]

I'm wondering if this will actually work to have a field which was a multi field before pointing to an alias. Problem is that we have now an alias http.url and http.url.raw which I would think is not possible in a template.

If you run make update and try to load the template, you will definitively find out.

[andrewvc]

@ruflin you are right, it totally does not work :(.

Closing.

Partial error below:

Elasticsearch returned: couldn't load template: couldn't load json. Error: 400 Bad Request: {"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"Mapping definition for [url] has unsupported parameters:  [properties : {raw={path=url.full, type=alias}}]"}],"type":"mapper_parsing_exception","reason":"Failed to parse mapping [_doc]: Mapping definition for [url] has unsupported parameters:  [properties : {raw={path=url.full, type=alias}}]","caused_by":{"type":"mapper_parsing_exception","reason":"Mapping definition for [url] has unsupported parameters:  [properties : {raw={path=url.full, type=alias}}]"}},"status":400}. Response body: {"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"Mapping definition for [url] has unsupported parameters:  [properties : {raw={path=url.full, type=alias}}]"}],"type":"mapper_parsing_exception","reason":"Failed to parse mapping [_doc]: Mapping definition for [url] has unsupported parameters:  [properties : {raw={path=url.full, type=alias}}]","caused_by":{"type":"mapper_parsing_exception","reason":"Mapping definition for [url] has unsupported parameters:  [properties : {raw={path=url.full, type=alias}}]"}},"status":400}. Template is: map[mappings:{"_doc":{"_meta":{"version":"7.0.0"},"date_detection":false,"dynamic_templates":[{"container.labels":{"mapping":{"type":"keyword"},"match_mapping_type":"string","path_match":"container.labels.*"}},{"fields":{"mapping":{"type":"keyword"},"match_mapping_type":"string","path_match":"fields.*"}},{"docker.container.labels":{"mapping":{"type":"keyword"},"match_mapping_type":"string","path_match":"docker.container.labels.*"}},{"strings_as_keyword":{"mapping":{"ignore_above":1024,"type":"keyword"},"match_mapping_type":"string"}}],"properties":{"@timestamp":{"type":"date"},"agent":{"properties":{"ephemeral_id":{"ignore_above":1024,"type":"keyword"},"hostname":{"ignore_above":1024,"type":"keyword"},"id":{"ignore_above":1024,"type":"keyword"},"name":{"ignore_above":1024,"type":"keyword"},"type":{"ignore_above":1024,"type":"keyword"},"version":{"ignore_above":1024,"type":"keyword"}}},"beat":{"properties":{"hostname":{"path":"agent.hostname","type":"alias"},"name":{"path":"agent.type","type":"alias"},"timezone":{"path":"event.timezone","type":"alias"}}},"client":{"properties":{"address":{"ignore_above":1024,"type":"keyword"},"bytes":{"type":"long"},"domain":{"ignore_above":1024,"type":"keyword"},"geo":{"properties":{"city_name":{"ignore_above":1024,"type":"keyword"},"continent_name":{"ignore_above":1024,"type":"keyword"},"country_iso_code":{"ignore_above":1024,"type":"keyword"},"country_name":{"ignore_above":1024,"type":"keyword"},"location":{"type":"geo_point"},"name":{"ignore_above":1024,"type":"keyword"},"region_iso_code":{"ignore_above":1024,"type":"keyword"},"region_name":{"ignore_above":1024,
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