chore: removing old api-client samples and changing the location of G… (GoogleCloudPlatform#1773)

* chore: removing old api-client samples and changing the location of Google Cloud Client samples
* Fix paths for tests to work

Author: rsamborski

compute/README.md

@@ -1,10 +1,17 @@
 # Google Compute Engine PHP Samples
 
 ## Description
-This is a simple web-based example of calling the Google Compute Engine API
-in PHP. These samples include calling the API with both the
-[Google API client](api-client) and [Google Cloud Client](cloud-client) (GA).
+This is a set of examples of calling the Google Compute Engine API
+in PHP. These samples include calling the API with the
+[Google Cloud Client](https://github.com/googleapis/google-cloud-php).
 
+Following samples are available:
+  * [Hello world](helloworld): a simple web-based example of calling the Google Compute Engine API
+  * [Instances](instances): GCE instances manipulation samples
+  * [Firewall](firewall): firewall rules manipulation samples
+  * [Logging](logging): app demonstrating how to log to Compute Engine from a PHP application
+ 
+## Google Cloud Samples
 
- * [Google Cloud Client](cloud-client) (**Recommended**): Under active development, currently in GA.
- * [Google API client](api-client): Stable and generally available, but no longer under active development
+To browse ready to use code samples check
+[Google Cloud Samples](https://cloud.google.com/docs/samples?language=php&product=computeengine).