Make ami_id configurable (#357)

tibanna/_version.py

@@ -1,4 +1,4 @@
 """Version information."""
 
 # The following line *must* be the last in the module, exactly as formatted:
-__version__ = "1.8.0"
+__version__ = "1.8.1"

tibanna/ec2_utils.py

@@ -311,7 +311,9 @@ def fill_default(self):
             self.mem_as_is = False
         if not hasattr(self, 'ebs_size_as_is'):  # if false, add 5GB overhead
             self.ebs_size_as_is = False
-
+        if not hasattr(self, 'ami_id'): 
+            self.ami_id = AMI_ID
+
     def fill_internal(self):
         # fill internally-used fields (users cannot specify these fields)
         # script url
@@ -320,8 +322,7 @@ def fill_internal(self):
         self.json_bucket = self.log_bucket
 
     def fill_language_options(self, language='cwl_v1', singularity=False):
-        """fill in ami_id and language fields (these are also internal)"""
-        self.ami_id = AMI_ID
+        """fill in language fields (these are also internal)"""
         if singularity:
             self.singularity = True
         self.language = language