added the get_epoch_time operation

content/io/cloudslang/base/datetime/get_epoch_time.sl

@@ -0,0 +1,29 @@
+########################################################################################################################
+#!!
+#! @description: Checks the current date and time, and returns its representation as an Epoch (Unix) timestamp.
+#!
+#! @output return_result: Current date and time in timestamp format.
+#! @output return_code: 0 for success and 1 for failure.
+#!
+#! @result SUCCESS: Date/time retrieved successfully.
+#! @result FAILURE: Date/time could not be retrieved.
+#!!#
+########################################################################################################################
+namespace: io.cloudslang.base.datetime
+operation:
+  name: get_epoch_time
+  python_action:
+    script: |-
+      import time
+      try:
+          return_result = str(int(time.time()))
+          return_code = '0'
+      except:
+          return_result = sys.exc_info()
+          return_code = '1'
+  outputs:
+    - return_result
+    - return_code
+  results:
+    - SUCCESS: ${return_code == '0'}
+    - FAILURE

test/io/cloudslang/base/datetime/test_get_epoch_time_inputs.yaml

@@ -0,0 +1,7 @@
+successTestGetEpochTime:
+  description: A successful test for get_epoch_time
+  testFlowPath: io.cloudslang.base.datetime.get_epoch_time
+  testSuites: [datetime-local]
+  outputs:
+    - return_code: '0'
+  result: SUCCESS