[DATALAB-2430] -- fixed bugs with param

diff --git a/services/datalab-model/src/main/java/com/epam/datalab/dto/computational/SparkStandaloneClusterResource.java b/services/datalab-model/src/main/java/com/epam/datalab/dto/computational/SparkStandaloneClusterResource.java
index d06e4c9..3cd1981 100644
--- a/services/datalab-model/src/main/java/com/epam/datalab/dto/computational/SparkStandaloneClusterResource.java
+++ b/services/datalab-model/src/main/java/com/epam/datalab/dto/computational/SparkStandaloneClusterResource.java

@@ -52,7 +52,7 @@
 
     @NotBlank
     @JsonProperty("slave_instance_shape")
-    private String slaveDtaEngineInstanceShape;
+    private String slaveDataEngineInstanceShape;
 
     @Builder
     public SparkStandaloneClusterResource(String computationalName, String computationalId, String imageName,
@@ -72,11 +72,13 @@
         super.setSlaveGpuCount(slaveGpuCount);
         super.setSlaveGpuType(slaveGpuType);
         super.setEnabledGPU(enabledGPU);
+        super.setMasterNodeShape(masterDataEngineInstanceShape);
+        super.setSlaveNodeShape(slaveDataEngineInstanceShape);
 
         this.masterDataEngineInstanceCount = masterDataEngineInstanceCount;
         this.masterDataEngineInstanceShape = masterDataEngineInstanceShape;
         this.slaveDataEngineInstanceCount = slaveDataEngineInstanceCount;
-        this.slaveDtaEngineInstanceShape = slaveDataEngineInstanceShape;
+        this.slaveDataEngineInstanceShape = slaveDataEngineInstanceShape;
 
         this.config = config;
     }

diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/service/impl/ComputationalServiceImpl.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/service/impl/ComputationalServiceImpl.java
index 9d023a9..419f978 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/service/impl/ComputationalServiceImpl.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/service/impl/ComputationalServiceImpl.java

@@ -369,6 +369,8 @@
                 .slaveGpuCount(form.getSlaveGpuCount())
                 .slaveGpuType(form.getSlaveGpuType())
                 .config(form.getConfig())
+                .totalInstanceCount(Integer.parseInt(form.getSlaveDataEngineInstanceCount())
+                        + Integer.parseInt(form.getMasterDataEngineInstanceCount()))
                 .build();
     }