### CI Link

https://gradle-enterprise.elastic.co/s/mcboq4te6p7o6

### Repro line

./gradlew :plugins:discovery-gce:qa:gce:check -Dtests.fips.enabled=true

### Does it reproduce?

Yes

### Applicable branches

master

### Failure history

_No response_

### Failure excerpt

This seems to have started failing since #85132

```
[2022-04-12T17:07:29,829][WARN ][o.e.c.g.GceInstancesServiceImpl] [yamlRestTest-1] unable to resolve default zone from metadata server for GCE discovery service
  java.security.KeyStoreException: Uninitialized keystore
       at java.security.KeyStore.size(KeyStore.java:1296) ~[?:?]
       at org.bouncycastle.jsse.provider.ProvTrustManagerFactorySpi.getTrustAnchors(ProvTrustManagerFactorySpi.java:227) ~[bctls-fips-1.0.9.jar:1.0.9]
       at org.bouncycastle.jsse.provider.ProvTrustManagerFactorySpi.engineInit(ProvTrustManagerFactorySpi.java:163) ~[bctls-fips-1.0.9.jar:1.0.9]
       at javax.net.ssl.TrustManagerFactory.init(TrustManagerFactory.java:282) ~[?:?]
       at com.google.api.client.util.SslUtils.initSslContext(SslUtils.java:107) ~[google-http-client-1.41.1.jar:1.41.1]
```
plugins/discovery-gce/src/main/java/org/elasticsearch/cloud/gce/GceInstancesServiceImpl.java
} else {
                    retryHttpInitializerWrapper = new RetryHttpInitializerWrapper(credential);
                }
                builder.setHttpRequestInitializer(retryHttpInitializerWrapper);
            } else {
                builder.setHttpRequestInitializer(credential);
            }
            this.client = builder.build();
        } catch (Exception e) {
            logger.warn("unable to start GCE discovery service", e);
            throw new IllegalArgumentException("unable to start GCE discovery service", e);
        }
        return this.client;
    }
    @Override
    public String projectId() {
        return project;
    }
    @Override
    public List<String> zones() {
        return zones;
    }
    @Override
    public void close() throws IOException {
        if (gceHttpTransport != null) {
            gceHttpTransport.shutdown();
        }
    }
}