Provide a version for RPM Obsoletes attribute (#670)

Fix RPM generation warning

CMakeLists.txt

@@ -528,7 +528,7 @@ set(CPACK_DEBIAN_PACKAGE_DEPENDS ${PACKAGE_REQUIRES})
 # Handle the project rebranding from omniperf to rocprofiler-compute
 set(OMNIPERF_PACKAGE_NAME "omniperf")
 set(CPACK_RPM_PACKAGE_PROVIDES ${OMNIPERF_PACKAGE_NAME})
-set(CPACK_RPM_PACKAGE_OBSOLETES ${OMNIPERF_PACKAGE_NAME})
+set(CPACK_RPM_PACKAGE_OBSOLETES "${OMNIPERF_PACKAGE_NAME} < 3.0.0")
 set(CPACK_RPM_PACKAGE_CONFLICTS ${OMNIPERF_PACKAGE_NAME})
 
 set(CPACK_DEBIAN_PACKAGE_PROVIDES ${OMNIPERF_PACKAGE_NAME})