Moved cinder_emc_config.xml.sample to emc folder

Vendor unique driver files should not be placed in /cinder/etc/cinder, but
should stay with the vendors driver.  Moved cinder_emc_config.xml.sample
to cinder/volume/drivers/emc folder.

Change-Id: I92151abdf46a3597ea94284b6dfcf611153cab19
Fixes: bug #1130496

diff --git a/etc/cinder/cinder_emc_config.xml.sample b/cinder/volume/drivers/emc/cinder_emc_config.xml.sample
similarity index 100%
rename from etc/cinder/cinder_emc_config.xml.sample
rename to cinder/volume/drivers/emc/cinder_emc_config.xml.sample