[enlightenment_info] rename the method 'GetClients' to 'GetWindowInfo' with e_test_helper
[enlightenment_info] rename the method 'GetClients' to 'GetWindowInfo' with e_test_helper

Change-Id: Icd8d7588dbc4817eb8d3b34db8f94d5461b2ff6b
Signed-off-by: Duna Oh <5cd3691589f6638eb364093c396f10a2fd7c8902@samsung.com>

tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment