Add X-History-Location headers support for containers and fix travis build config bug

.travis.yml

@@ -36,3 +36,8 @@ after_success:
 # infrastructure. This should prevent the buffer overflow from
 # https://github.com/travis-ci/travis-ci/issues/5227
 sudo: false
+
+# due to travis-ci changes in default build environment,
+# this must be specify in order for oraclejdk8 to install
+# https://blog.travis-ci.com/2019-04-15-xenial-default-build-environment
+dist: trusty

core/src/main/java/org/openstack4j/model/storage/object/SwiftHeaders.java

@@ -24,6 +24,7 @@ public final class SwiftHeaders {
 
     // Versioning
     public static final String VERSIONS_LOCATION = "X-Versions-Location";
+    public static final String HISTORY_LOCATION = "X-History-Location";
 
     // ACL's (not all implementations support this)
     public static final String CONTAINER_READ = "X-Container-Read";

core/src/main/java/org/openstack4j/model/storage/object/options/CreateUpdateContainerOptions.java

@@ -62,6 +62,19 @@ public CreateUpdateContainerOptions versionsLocation(String containerName) {
         add(VERSIONS_LOCATION, containerName);
         return this;
     }
+
+    /**
+     * Enables history versioning mode on this container. The value is the name of another container.
+     * You must UTF-8-encode and then URL-encode the name before you include it in the header.
+     * To disable versioning, set the header to an empty string.
+     *
+     * @param containerName the container name of the other container
+     * @return CreateUpdateContainerOptions
+     */
+    public CreateUpdateContainerOptions historyLocation(String containerName) {
+        add(HISTORY_LOCATION, containerName);
+        return this;
+    }
 
     /**
      * Sets the read ACL (if supported) to allow public access