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This patch, extends the file-based storage type verification checks to
include the new Gluster storage type. Those modifications include a
missing check for the gluster storage directory at cluster
initialization time, and extends the 'gnt-cluster verify' command to
also verify the gluster file-storage path.
Signed-off-by: Dimitris Bliablias <bl.dimitris@gmail.com>
Signed-off-by: Petr Pudlak <pudlak@google.com>
Reviewed-by: Petr Pudlak <pudlak@google.com>

Cherry-picked from 604c8be2Signed-off-by: Lisa Velden <velden@google.com>
Signed-off-by: Klaus Aehlig <aehlig@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>