skyring: fix externalusers api to provide proper error message
skyring: fix externalusers api to provide proper error message

This patch provides a proper error message
for the invalid page-no and page-count values

Change-Id: Ic060bca958d6f8eba37deeaee6ccd534b89703f5
Signed-off-by: Timothy Asir <9ae03c403dd2d82025ba1aad4fc83885ac926861@redhat.com>
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1310098
Signed-off-by: Timothy Asir <9ae03c403dd2d82025ba1aad4fc83885ac926861@redhat.com>

skyrings/skyring,skyrings/skyring,skyrings/skyring,skyrings/skyring