1. Update the instance migration link 2. remove the unnecessary install-guide link configure and install Ceilometer by https://docs.openstack.org/ceilometer/latest is enough remove the other link. Change-Id: I2bf408de1023750a3d1f2c9e25293649d99ac428
1. Update the instance migration link 2. remove the unnecessary install-guide link configure and install Ceilometer by https://docs.openstack.org/ceilometer/latest is enough remove the other link. Change-Id: I2bf408de1023750a3d1f2c9e25293649d99ac428