users in role pagination support

packages/rocketchat-authorization/server/functions/getUsersInRole.coffee

-RocketChat.authz.getUsersInRole = (roleName, scope) ->
+RocketChat.authz.getUsersInRole = (roleName, scope, options) ->
 	# alanning:roles doc says this is an expensive operation
 	unless _.isString(scope)
 		scope = Roles.GLOBAL_GROUP
-		
-	return Roles.getUsersInRole(roleName, scope)
+
+	return Roles.getUsersInRole(roleName, scope, options)
\ No newline at end of file

packages/rocketchat-authorization/server/publications/usersInRole.coffee

-Meteor.publish 'usersInRole', (roleName) ->
+Meteor.publish 'usersInRole', (roleName, page = 1) ->
 	unless @userId
 		return @ready()
 
 	if not RocketChat.authz.hasPermission @userId, 'access-rocket-permissions'
 		throw new Meteor.Error "not-authorized"
 
-	return RocketChat.authz.getUsersInRole roleName
+	itemsPerPage = 20
+	pagination =
+		sort:
+			name: 1
+		limit: itemsPerPage
+		offset: itemsPerPage * (page - 1)
+
+	return RocketChat.authz.getUsersInRole roleName, null, pagination