fix: Remove URL encoding in project name

Author: sakthivelmanii

google-cloud-spanner/src/main/java/com/google/cloud/spanner/InstanceAdminClientImpl.java

@@ -53,7 +53,7 @@ protected com.google.iam.v1.Policy toPb(Policy policy) {
   }
 
   private static final PathTemplate PROJECT_NAME_TEMPLATE =
-      PathTemplate.create("projects/{project}");
+      PathTemplate.createWithoutUrlEncoding("projects/{project}");
   private final DatabaseAdminClient dbClient;
   private final String projectId;
   private final SpannerRpc rpc;

google-cloud-spanner/src/test/java/com/google/cloud/spanner/InstanceAdminClientImplTest.java

@@ -296,6 +296,37 @@ public void createInstance() throws Exception {
     assertThat(op.get().getId().getName()).isEqualTo(INSTANCE_NAME);
   }
 
+  @Test
+  public void createInstanceWithOrgNameInProjectId() throws Exception {
+    String projectIdWithOrg = "my-org:my-project";
+    String instanceNameWithOrg = "projects/my-org:my-project/instances/my-instance";
+    String configNameWithOrg = "projects/my-org:my-project/instanceConfigs/my-config";
+
+    InstanceAdminClient universeClient = new InstanceAdminClientImpl(projectIdWithOrg, rpc, dbClient);
+    com.google.spanner.admin.instance.v1.Instance instance = com.google.spanner.admin.instance.v1.Instance.newBuilder()
+        .setConfig(configNameWithOrg)
+        .setName(instanceNameWithOrg)
+        .setNodeCount(1)
+        .setProcessingUnits(0)
+        .setEdition(com.google.spanner.admin.instance.v1.Instance.Edition.ENTERPRISE_PLUS)
+        .build();
+    OperationFuture<com.google.spanner.admin.instance.v1.Instance, CreateInstanceMetadata>
+        rawOperationFuture =
+        OperationFutureUtil.immediateOperationFuture(
+            "createInstance", instance, CreateInstanceMetadata.getDefaultInstance());
+    when(rpc.createInstance("projects/" + projectIdWithOrg, INSTANCE_ID, instance))
+        .thenReturn(rawOperationFuture);
+    OperationFuture<Instance, CreateInstanceMetadata> op =
+        universeClient.createInstance(
+            InstanceInfo.newBuilder(InstanceId.of(projectIdWithOrg, INSTANCE_ID))
+                .setInstanceConfigId(InstanceConfigId.of(projectIdWithOrg, CONFIG_ID))
+                .setEdition(com.google.spanner.admin.instance.v1.Instance.Edition.ENTERPRISE_PLUS)
+                .setNodeCount(1)
+                .build());
+    assertThat(op.isDone()).isTrue();
+    assertThat(op.get().getId().getName()).isEqualTo(instanceNameWithOrg);
+  }
+
   @Test
   public void testCreateInstanceWithProcessingUnits() throws Exception {
     OperationFuture<com.google.spanner.admin.instance.v1.Instance, CreateInstanceMetadata>