Add guard on test that network is available #47694

Job	Run time
CI Sanity Check	32s
Attach pull request number	4s
Initial JDK 17 Build	10m 13s
Calculate Test Jobs	12s
JVM Tests - JDK 17	5m 49s
JVM Tests - JDK 21	6m 3s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	8m 25s
Maven Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
Quickstarts Compilation - JDK ${{ matrix.java.name }}	0s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Native Tests - ${{ matrix.category }}	0s
Upload build stats to collector	0s
Build report	32s
	31m 50s

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