Enable Develocity build cache by default and document it better #38153

Job	Run time
Attach pull request number	3s
CI Sanity Check	32s
Initial JDK 17 Build	19m 17s
Calculate Test Jobs	8s
Devtools Tests - JDK 17	14m 50s
Devtools Tests - JDK 21	14m 44s
JVM Tests - JDK 17	2h 16m 45s
Devtools Tests - JDK 17 Windows	21m 57s
JVM Tests - JDK 21	2h 1m 44s
Gradle Tests - JDK 17	25m 55s
Kubernetes Tests - JDK 17	4m 29s
JVM Tests - JDK 17 Windows	1h 55m 21s
Gradle Tests - JDK 17 Windows	54m 46s
Kubernetes Tests - JDK 21	4m 2s
Maven Tests - JDK 17	49m 54s
Kubernetes Tests - JDK 17 Windows	3m 20s
Maven Tests - JDK 17 Windows	1h 4m 32s
Quickstarts Compilation - JDK 17	4m 59s
MicroProfile TCKs Tests	10m 22s
Native Tests - Main	6m 22s
Native Tests - Virtual Thread - Main	23m 10s
Native Tests - Data1	30m 18s
Native Tests - Virtual Thread - Messaging	10m 28s
Native Tests - Data2	28m 30s
Native Tests - Data3	25m 23s
Native Tests - Data4	18m 35s
Native Tests - Data5	20m 43s
Native Tests - Data6	28m 59s
Native Tests - Data7	40m 13s
Native Tests - Amazon	15m 40s
Native Tests - Messaging1	31m 26s
Native Tests - Messaging2	12m 31s
Native Tests - Security1	22m 35s
Native Tests - Security2	28m 33s
Native Tests - Security3	14m 8s
Native Tests - Cache	15m 46s
Native Tests - HTTP	42m 52s
Native Tests - Misc1	27m 46s
Native Tests - Misc2	17m 58s
Native Tests - Misc3	29m 57s
Native Tests - Misc4	43m 54s
Native Tests - Spring	18m 54s
Native Tests - gRPC	18m 32s
Native Tests - Windows - RESTEasy Jackson	6m 22s
Native Tests - DevTools Integration Tests	3m 34s
Native Tests - AWT, ImageIO and Java2D	7m 25s
Build report	1m 34s
	20h 59m 48s

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