XRT 2021.1

Removing rhel9 and apu_package for 2021.1 as per request (#8388) #2

Job	Run time
build (centos78, rpm, centos_7.8)	12m 16s
build (centos78, rpm, centos_7.8)	12m 16s
build (centos8, rpm, centos_8.1)	9m 28s
build (centos8, rpm, centos_8.1)	9m 28s
build (ubuntu2004, deb, ubuntu_20.04)	11m 40s
build (ubuntu2004, deb, ubuntu_20.04)	11m 40s
build (ubuntu2204, deb, ubuntu_22.04)	11m 21s
build (ubuntu2204, deb, ubuntu_22.04)	11m 21s
setenv-download	14s
setenv-download	14s
Release_to_xco	0s
Release_to_xco	0s
Upload_packages_to_Artifactory	0s
Upload_packages_to_Artifactory	0s
Release_to_all_sites	0s
Release_to_all_sites	0s
gradle-artifactory-upload	0s
gradle-artifactory-upload	0s
notify-slack	8s
notify-slack	8s
cleanup-build	0s
cleanup-build	0s
	1h 30m 14s

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