openjdk: promote hotspot test to extended level (#5624)

Author: zzambers

openjdk/playlist.xml

@@ -335,7 +335,7 @@
 			<version>11+</version>
 		</versions>
 		<levels>
-			<level>dev</level>
+			<level>extended</level>
 		</levels>
 		<groups>
 			<group>openjdk</group>
@@ -361,7 +361,7 @@
 			<version>11+</version>
 		</versions>
 		<levels>
-			<level>dev</level>
+			<level>extended</level>
 		</levels>
 		<groups>
 			<group>openjdk</group>
@@ -387,7 +387,7 @@
 			<version>11+</version>
 		</versions>
 		<levels>
-			<level>dev</level>
+			<level>extended</level>
 		</levels>
 		<groups>
 			<group>openjdk</group>