Say in gsql documentation that 'Access Database' capability is required

Since abd6d4e1d4ac11b7478c00289258a462d8544a24 the 'Access Database'
capability is required to run the gsql command.

Change-Id: I39b2b22be975172839ab9808649afcfc58994806
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
1 file changed