gpfs driver: fix logging problems

Fixed the string formatting template issues
Fixed the name collision on the _ variable by changing the variable name to err

Closes-Bug: #1289382

Change-Id: Id690c2b6dcd5e9732330e6b98be34819586b78fc
Fixed spelling error - accomodate to accommodate

Change-Id: I88bc2c3034e4fdc19b7d0a0e0ebf7eb5b2ad44f7
EMC SMI-S delete snapshot unit test takes too long

EMC SMI-S unit test for deleting snapshot takes too long.
This patch sets Timout to 0 in cinder_emc_config.xml
so that it will return immediately.  Without this fix,
it will wait for 10 seconds by default.

Change-Id: I223f6741a2ce393e555467350201a695ae210152
Closes-Bug: #1289653
get volumes API does not handle limit=0

This bug fixes a regression from bug 1288429, where the "next"
link is added when the number of volumes returned is the
maximum limit (even if the "limit" param is not specified).

The regression is hit when a "limit" of 0 is specified; in this
case the logic to create the "next" link is still executed and an
exception is thrown. The fix is to add back in the "if" check that
implictly checks if the max_items is non-0.

Test code was also created to verify that a limit of 0 is handled
correctly.

Change-Id: I92f9afb9b0e2c627d2c77f67fa026b731903384f
Closes-bug: 1289124
Merge "EMC SMI-S delete snapshot unit test takes too long"
Merge "Fixed spelling error - accomodate to accommodate"
Merge "gpfs driver: fix logging problems"
Merge "get volumes API does not handle limit=0"