Change Artifactory credential to AccessToken (#387)

* Change Artifactory credential to AccessToken

* Generate protos

Author: mcastorina

pkg/pb/credentialspb/credentials.pb.go

@@ -59,3 +59,7 @@ message GitHubApp {
   string installation_id = 2;
   string app_id = 3;
 }
+
+message AccessToken {
+  string token = 1;
+}

pkg/pb/credentialspb/credentials.pb.validate.go

@@ -230,7 +230,7 @@ message Artifactory {
   string endpoint = 1 [(validate.rules).string.uri_ref = true];
   oneof credential {
     credentials.BasicAuth basic_auth = 2;
-    credentials.Header header = 3;
+    credentials.AccessToken access_token = 3;
   }
   repeated string repositories = 4;
 }