Build: (GE) Revert removal of build cash configuration for CI builds

This is done in order to start gatherign GE data on 'trunk', all
other branches, both local and CI environments, based on the latest and
current baseline.

settings.gradle

@@ -15,6 +15,17 @@ gradleEnterprise {
     }
 }
 
+if (System.getenv().containsKey("CI")) {
+    buildCache {
+        remote(HttpBuildCache) {
+            url = "http://10.0.2.215:5071/cache/"
+            allowUntrustedServer = true
+            allowInsecureProtocol = true
+            push = true
+        }
+    }
+}
+
 rootProject.name = 'WPAndroid'
 
 include ':WordPress'