Audit logging -- convert audit logs to use the new schema (#20526)

* Audit logging - new schema added, old schema removed.

* fix linter error by running goimports

* Address review comments

* Address review comments

* Example usage of new audit logging API for the updateUserAuth call

* fixed unit test on auditing updating user record

* Changed the `TestUpdateConfigDiffInAuditRecord` testcase---it failed, because this PR changes how the `meta` field is serialized into the audit log records.

* fix linter error

* use string constants for record keys

* new audit api calls for api4/bot

* `Auditable` interface implementations for model classes

* New audit calls for channel api

* New audit calls for channel_local

* renamed receivers for required style reasons

* New audit calls for api4/command

* renamed receiver

* New audit calls for api4/command_local

* renamed receiver

* fix unit test to reflect changes in the Auditable implementation of the user class

* new audit calls for compliance

* new audit calls for configs

* remove auditRec.addMeta from updateConfig and patchConfig

* new audit calls for config_local

* new audit calls

* new audit calls for ldap, license apis

* new audit calls

* new audit calls

* new audit calls

* new audit calls

* new audit calls

* new audit calls

* new audit calls

* new audit calls

* fix linter error

* fixed linter error

* fixed "user update" test

* Don't include all of config when audit logging config changes. Also fix unit test on TestUpdateConfigDiffInAuditRecord

* address review comments

* Added Auditable() method for UserPatch

* Fix duplicative method declaration from merge

* Fix styling and API changes issues introduced with merge

* Fix broken test

Co-authored-by: Daniel Schalla <daniel@schalla.me>

api4/saml.go

@@ -83,7 +83,7 @@ func addSamlPublicCertificate(c *Context, w http.ResponseWriter, r *http.Request
 
 	auditRec := c.MakeAuditRecord("addSamlPublicCertificate", audit.Fail)
 	defer c.LogAuditRec(auditRec)
-	auditRec.AddMeta("filename", fileData.Filename)
+	auditRec.AddEventParameter("filename", fileData.Filename)
 
 	if err := c.App.AddSamlPublicCertificate(fileData); err != nil {
 		c.Err = err
@@ -107,7 +107,7 @@ func addSamlPrivateCertificate(c *Context, w http.ResponseWriter, r *http.Reques
 
 	auditRec := c.MakeAuditRecord("addSamlPrivateCertificate", audit.Fail)
 	defer c.LogAuditRec(auditRec)
-	auditRec.AddMeta("filename", fileData.Filename)
+	auditRec.AddEventParameter("filename", fileData.Filename)
 
 	if err := c.App.AddSamlPrivateCertificate(fileData); err != nil {
 		c.Err = err
@@ -155,7 +155,7 @@ func addSamlIdpCertificate(c *Context, w http.ResponseWriter, r *http.Request) {
 			c.Err = err
 			return
 		}
-		auditRec.AddMeta("filename", fileData.Filename)
+		auditRec.AddEventParameter("filename", fileData.Filename)
 
 		if err := c.App.AddSamlIdpCertificate(fileData); err != nil {
 			c.Err = err