Release v1.6.0 (#324)

* Update version and changelog for v1.6.0
* Update docs
diff --git a/docs/dyn/ml_v1beta1.projects.jobs.html b/docs/dyn/ml_v1beta1.projects.jobs.html
index 3882bfd..35a941e 100644
--- a/docs/dyn/ml_v1beta1.projects.jobs.html
+++ b/docs/dyn/ml_v1beta1.projects.jobs.html
@@ -137,7 +137,7 @@
 
 { # Represents a training or prediction job.
     "trainingOutput": { # Represents results of a training job. # The current training job result.
-      "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
+      "consumedMLUnits": 3.14, # The amount of ML units consumed by the job.
       "trials": [ # Results for individual Hyperparameter trials.
         { # Represents the result of a single hyperparameter tuning trial from a
             # training job. The TrainingOutput object that is returned on successful
@@ -159,6 +159,7 @@
           },
         },
       ],
+      "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
     },
     "startTime": "A String", # Output only. When the job processing was started.
     "errorMessage": "A String", # Output only. The details of a failure or a cancellation.
@@ -326,7 +327,7 @@
 
     { # Represents a training or prediction job.
       "trainingOutput": { # Represents results of a training job. # The current training job result.
-        "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
+        "consumedMLUnits": 3.14, # The amount of ML units consumed by the job.
         "trials": [ # Results for individual Hyperparameter trials.
           { # Represents the result of a single hyperparameter tuning trial from a
               # training job. The TrainingOutput object that is returned on successful
@@ -348,6 +349,7 @@
             },
           },
         ],
+        "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
       },
       "startTime": "A String", # Output only. When the job processing was started.
       "errorMessage": "A String", # Output only. The details of a failure or a cancellation.
@@ -524,7 +526,7 @@
 
     { # Represents a training or prediction job.
       "trainingOutput": { # Represents results of a training job. # The current training job result.
-        "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
+        "consumedMLUnits": 3.14, # The amount of ML units consumed by the job.
         "trials": [ # Results for individual Hyperparameter trials.
           { # Represents the result of a single hyperparameter tuning trial from a
               # training job. The TrainingOutput object that is returned on successful
@@ -546,6 +548,7 @@
             },
           },
         ],
+        "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
       },
       "startTime": "A String", # Output only. When the job processing was started.
       "errorMessage": "A String", # Output only. The details of a failure or a cancellation.
@@ -736,7 +739,7 @@
     "jobs": [ # The list of jobs.
       { # Represents a training or prediction job.
           "trainingOutput": { # Represents results of a training job. # The current training job result.
-            "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
+            "consumedMLUnits": 3.14, # The amount of ML units consumed by the job.
             "trials": [ # Results for individual Hyperparameter trials.
               { # Represents the result of a single hyperparameter tuning trial from a
                   # training job. The TrainingOutput object that is returned on successful
@@ -758,6 +761,7 @@
                 },
               },
             ],
+            "completedTrialCount": "A String", # The number of hyperparameter tuning trials that completed successfully.
           },
           "startTime": "A String", # Output only. When the job processing was started.
           "errorMessage": "A String", # Output only. The details of a failure or a cancellation.