MDEV-40173 RPM conflicts on /usr/lib64/security

The move of the install location of pam files in MDEV-37197
(34aac09) resulted in different
install locations on different RPM distros.

Correct the RPM packaging to ignore the path of the pam files
(but not the pam files themselves).

Author: sanja-byelkin

cmake/cpack_rpm.cmake

@@ -155,9 +155,8 @@ SET(ignored
   "%ignore /etc/systemd"
   "%ignore /etc/systemd/system"
   "%ignore /lib"
-  "%ignore /lib/security"
   "%ignore /lib64"
-  "%ignore /lib64/security"
+  "%ignore ${INSTALL_PAMDIR_RPM}"
   "%ignore ${CMAKE_INSTALL_PREFIX}"
   "%ignore ${CMAKE_INSTALL_PREFIX}/bin"
   "%ignore ${CMAKE_INSTALL_PREFIX}/include"