Migration tests in v2.6 should not repeat all migration tests.

Now LiveMigrationRemoteConsolesV26Test inherits from
LiveMigrationTest, which will unnecessarily repeat all tests in
LiveMigrationTest. This is to change the v26 class inheritance
to save the running time.

Change-Id: I0929ad8a5ad5f1a4c2ae2d917e001c26aa9cec66
1 file changed