Add permissions for CI test github action #178

Job	Run time
pre-check	3m 28s
build-multiple-delta-packs	4m 22s
bundle-commands	3m 20s
clean-rebuild	4m 38s
build-delta-manifests	3m 40s
config-conversion	3m 21s
build-all-delta-packs	4m 3s
content-chroot	3m 45s
contentsize-check	3m 36s
create-mix-with-blended-content	5m 34s
create-mix-with-custom-content	4m 43s
update-mix-add-remove-bundles	11m 4s
clr-installer-config	3m 1s
customize-os-release	4m 48s
export-flag	4m 31s
manual-upstream-format-bump-flow	3m 41s
manual-format-bump-flow	3m 42s
no-delta-manifests-over-format-bump	3m 56s
no-delta-packs-over-format-bump	4m 10s
no-state-variables-in-full	3m 49s
state-conversion	3m 37s
test-format-bump	4m 37s
upstream-format-bump	3m 37s
update-mixver-offline	3m 8s
	1h 42m 11s

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