add provider as an option in id5 config params to identify prebid identity wrappers

modules/id5IdSystem.js

@@ -89,6 +89,7 @@ export const id5IdSubmodule = {
       'nbPage': incrementNb(config.params.partner),
       'o': 'pbjs',
       'pd': config.params.pd || '',
+      'provider': config.params.provider || '',
       'rf': referer.referer,
       's': signature,
       'top': referer.reachedTop ? 1 : 0,

modules/id5IdSystem.md

@@ -45,10 +45,11 @@ pbjs.setConfig({
 | params | Required | Object | Details for the ID5 Universal ID. | |
 | params.partner | Required | Number | This is the ID5 Partner Number obtained from registering with ID5. | `173` |
 | params.pd | Optional | String | Publisher-supplied data used for linking ID5 IDs across domains. See [our documentation](https://wiki.id5.io/x/BIAZ) for details on generating the string. Omit the parameter or leave as an empty string if no data to supply | `"MT1iNTBjY..."` |
+| params.provider | Optional | String | An identifier provided by ID5 to technology partners who manage Prebid setups on behalf of publishers. Reach out to [ID5](mailto:prebid@id5.io) if you have questions about this parameter  | `pubmatic-identity-hub` |
 | storage | Required | Object | Storage settings for how the User ID module will cache the ID5 ID locally | |
 | storage.type | Required | String | This is where the results of the user ID will be stored. ID5 **requires** `"html5"`. | `"html5"` |
 | storage.name | Required | String | The name of the local storage where the user ID will be stored. ID5 **requires** `"id5id"`. | `"id5id"` |
 | storage.expires | Optional | Integer | How long (in days) the user ID information will be stored. ID5 recommends `90`. | `90` |
 | storage.refreshInSeconds | Optional | Integer | How many seconds until the ID5 ID will be refreshed. ID5 strongly recommends 8 hours between refreshes | `8*3600` |
 
-**ATTENTION:** As of Prebid.js v4.14.0, ID5 requires `storage.type` to be `"html5"` and `storage.name` to be `"id5id"`. Using other values will display a warning today, but in an upcoming release, it will prevent the ID5 module from loading. This change is to ensure the ID5 module in Prebid.js interoperates properly with the [ID5 API](https://github.com/id5io/id5-api.js) and to reduce the size of publishers' first-party cookies that are sent to their web servers. If you have any questions, please reach out to us at [prebid@id5.io](mailto:prebid@id5.io).
+**ATTENTION:** As of Prebid.js v4.14.0, ID5 requires `storage.type` to be `"html5"` and `storage.name` to be `"id5id"`. Using other values will display a warning today, but in an upcoming release, it will prevent the ID5 module from loading. This change is to ensure the ID5 module in Prebid.js interoperates properly with the [ID5 API](https://github.com/id5io/id5-api.js) and to reduce the size of publishers' first-party cookies that are sent to their web servers. If you have any questions, please reach out to us at [prebid@id5.io](mailto:prebid@id5.io).

test/spec/modules/id5IdSystem_spec.js

@@ -141,6 +141,7 @@ describe('ID5 ID System', function() {
       expect(requestBody.o).to.eq('pbjs');
       expect(requestBody.pd).to.eq('');
       expect(requestBody.s).to.eq('');
+      expect(requestBody.provider).to.eq('');
       expect(requestBody.v).to.eq('$prebid.version$');
 
       request.respond(200, responseHeader, JSON.stringify(ID5_JSON_RESPONSE));