GUACAMOLE-641: Add generic vault support with an initial Azure Key Vault implementation.

doc/licenses/autorest-client-runtime-1.7.4/README

@@ -0,0 +1,9 @@
+AutoRest Client Runtimes for Java
+(https://github.com/Azure/autorest-clientruntime-for-java)
+----------------------------------------------------------
+
+    Version: 1.7.4
+    From: 'Microsoft Azure' (https://azure.microsoft.com/)
+    License(s):
+        MIT (bundled/autorest-client-runtime-1.7.4/LICENSE)
+