Add cpus options for host config

src/main/java/com/spotify/docker/client/messages/HostConfig.java

@@ -175,6 +175,11 @@ public abstract class HostConfig {
   @JsonProperty("CpusetMems")
   public abstract String cpusetMems();
 
+  @Nullable
+
+  @JsonProperty("Cpus")
+  public abstract Float cpus();
+
   @Nullable
   @JsonProperty("CpuQuota")
   public abstract Long cpuQuota();
@@ -269,6 +274,7 @@ static HostConfig create(
       @JsonProperty("MemorySwap") final Long memorySwap,
       @JsonProperty("MemorySwappiness") final Integer memorySwappiness,
       @JsonProperty("MemoryReservation") final Long memoryReservation,
+      @JsonProperty("Cpus") final Float cpus,
       @JsonProperty("NanoCpus") final Long nanoCpus,
       @JsonProperty("CpuPeriod") final Long cpuPeriod,
       @JsonProperty("CpuShares") final Long cpuShares,
@@ -317,6 +323,7 @@ static HostConfig create(
         .memorySwap(memorySwap)
         .memorySwappiness(memorySwappiness)
         .memoryReservation(memoryReservation)
+        .cpus(cpus)
         .nanoCpus(nanoCpus)
         .cpuPeriod(cpuPeriod)
         .cpuShares(cpuShares)
@@ -566,6 +573,8 @@ private static <T> ImmutableList<T> copyWithoutDuplicates(final List<T> input) {
 
     public abstract Builder memoryReservation(Long memoryReservation);
 
+    public abstract Builder cpus(Float cpus);
+
     public abstract Builder nanoCpus(Long nanoCpus);
 
     public abstract Builder cpuPeriod(Long cpuPeriod);

src/test/java/com/spotify/docker/client/DefaultDockerClientUnitTest.java

@@ -393,6 +393,30 @@ public void testNanoCpus() throws Exception {
     assertThat(hostConfig.nanoCpus(), is(nanoCpus.longValue()));
   }
 
+  @Test
+  public void testCpus() throws  Exception {
+    final DefaultDockerClient dockerClient = new DefaultDockerClient(builder);
+
+    final HostConfig hostConfig = HostConfig.builder()
+              .cpus((float)1.5)
+              .build();
+    final ContainerConfig containerConfig = ContainerConfig.builder()
+              .hostConfig(hostConfig)
+              .build();
+
+    server.enqueue(new MockResponse());
+
+    dockerClient.createContainer(containerConfig);
+
+    final RecordedRequest recordedRequest = takeRequestImmediately();
+
+    final JsonNode requestJson = toJson(recordedRequest.getBody());
+    final JsonNode cpus = requestJson.get("HostConfig").get("Cpus");
+
+    assertThat(hostConfig.cpus(), is(cpus.floatValue()));
+    assertThat(hostConfig.cpus(), is((float)1.5));
+  }
+
   @Test
   public void testInspectNode() throws Exception {
     final DefaultDockerClient dockerClient = new DefaultDockerClient(builder);