Fix miqJqueryRequest exception when called with no options
Fix miqJqueryRequest exception when called with no options

tried to touch options.observe before it's ||{}ed
(transferred from ManageIQ/manageiq@aeaa425fff7d1a9f8ff21fb5e1d45b9d11667353)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic