Revert "bumped the OCP 4.7 z-stream from 4.7.21 -> 4.7.24"

This reverts commit 4b43cfdd42.

pkg/util/dynamichelper/discovery/bindata.go

@@ -340,7 +340,7 @@ func aroOpenshiftIoV1alpha1ServerresourcesJson() (*asset, error) {
 	return a, nil
 }
 
-var _assets_version = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x32\xd1\x33\xd7\x33\x32\xe1\x02\x04\x00\x00\xff\xff\xf5\xad\x1a\xd3\x07\x00\x00\x00")
+var _assets_version = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x32\xd1\x33\xd7\x33\x32\xe4\x02\x04\x00\x00\xff\xff\xb0\x59\x6d\xae\x07\x00\x00\x00")
 
 func assets_versionBytes() ([]byte, error) {
 	return bindataRead(

pkg/util/dynamichelper/discovery/cache/assets_version

@@ -1 +1 @@
-4.7.24
+4.7.21

pkg/util/version/const.go

@@ -27,8 +27,8 @@ var GitCommit = "unknown"
 
 // InstallStream describes stream we are defaulting to for all new clusters
 var InstallStream = &Stream{
-	Version:  NewVersion(4, 7, 24),
-	PullSpec: "quay.io/openshift-release-dev/ocp-release@sha256:06c95d1212f977af6270d5683ae4d963f7215a75177893335a96433de87ffefe",
+	Version:  NewVersion(4, 7, 21),
+	PullSpec: "quay.io/openshift-release-dev/ocp-release@sha256:60454c3270a61432447c752a9d5ee3e7d84cebcfd5d371eb4daa263623923dac",
 }
 
 // UpgradeStreams describes list of streams we support for upgrades