Added classfilter provided by @grfullerton (see Argelbargel#52 or Argelbargel#57)

Argelbargel · Argelbargel · commit adc15ab7af8b · 2018-03-23T17:58:13.000+01:00
diff --git a/src/main/resources/META-INF/hudson.remoting.ClassFilter b/src/main/resources/META-INF/hudson.remoting.ClassFilter
@@ -0,0 +1,3 @@
+org.gitlab.api.models.GitlabNamespace
+org.gitlab.api.models.GitlabPermission
+org.gitlab.api.models.GitlabProjectAccessLevel

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+org.gitlab.api.models.GitlabNamespace`
	`2`	`+org.gitlab.api.models.GitlabPermission`
	`3`	`+org.gitlab.api.models.GitlabProjectAccessLevel`