Add some test sequences

Author: ydirson

tests/install/test-sequences/82-83.lst

@@ -0,0 +1,6 @@
+tests/install/test.py::TestNested::test_install[uefi-821.1]
+tests/install/test.py::TestNested::test_firstboot[uefi-821.1]
+tests/install/test.py::TestNested::test_upgrade[uefi-821.1-83b2]
+tests/install/test.py::TestNested::test_firstboot[uefi-821.1-83b2]
+tests/install/test.py::TestNested::test_restore[uefi-821.1-83b2-83b2]
+tests/install/test.py::TestNested::test_firstboot[uefi-821.1-83b2-83b2]