We experienced a similar issue with regards the provisioning sequence and the Android client not connecting to WiFi.
In our case, it was down to the SSID of the wireless network.
If your settings state that provisioning is over WiFi only, then your client has to be able to connect to a wireless network with the SSID as defined in the 'Clear Pass Onboard -> Configuration -> Network settings -> Wireless Network Settings' area. If the client cannot connect to an SSID of the same name, then the onboarding process appears to fail.
However, we did find that the provisioning was successful and we could proceed with Aruba VIA VPN client install and config.
Hope this helps.