Improve gpfs config flag help text readability

Modify the help text for gpfs configuration flags so that it
reads more clearly.

Closes-Bug: #1233288

Change-Id: Iea41bceb496dfaa1f8625a6e3abb31794838213d
Storwize SVC driver hostname can't start with number

Storwize family storage does not allow host identifier start with
a numeric number. Otherwise cinder initialize_connection() API will
throw exception due to such invalid host name in the connector. The fix
is to add a '_' symbol as prefix if the host identifier in connector
starts with non-alphabet letters.

Closes-Bug: #1233952
Change-Id: Ia88afc373e2635c10c3f6256331a4fd90f51f4b8
Fixes incorrect class path in logging_sample.conf

It seems to be a leak in 'Change-Id:
I95d23aafe19b12d4a427149aa5f7a66394d178c6'.

Change-Id: I4c2777049ec9e301a1f05b3a7b4aa5dd71c033e3
Closes-Bug: #1233985
Merge "Improve gpfs config flag help text readability"
Merge "Storwize SVC driver hostname can't start with number"
Merge "Fixes incorrect class path in logging_sample.conf"