VP1Gui: Make the package compile if QT_NO_SSL is defined
This MR is based on MR !55183 (closed) by @rhauser.
Make the VP1Gui package compile if QT_NO_SSL is defined and treat like QSslSocket::supportsSsl() returns false. For more details see ATLASVPONE-553. This update is necessary to support VPGui with LCG_102 which ships Ot 5.15.2 that does not support the CentOS7 native openssl 1.0 version anymore.
@rbianchi could you please provide feedback until the end of this week.
Edited by Johannes Elmsheuser