node-SDK FAB-2184 Fix coucbdb-fabricca-tests.js
node-SDK FAB-2184 Fix coucbdb-fabricca-tests.js

The test coucbdb-fabricca-tests.js exits when it cannot set the
keyValStore, yet it passes the test.  The test should fail when this
happens.  See FAB-2184 for a discussion of the error.

Change-Id: Iba80bcf8e40ecd30bb5280fe7ee714e8730d8368
Signed-off-by: jjjjibm <87b434c01f19c9ff864700795d0c8949064dc3a6@us.ibm.com>

adityachap/fabric-sdk-node,ratnakar-asara/fabric-sdk-node,ratnakar-asara/fabric-sdk-node,adityachap/fabric-sdk-node,ratnakar-asara/fabric-sdk-node,ratnakar-asara/fabric-sdk-node