Refactor ec2_elb_lb to use shared module snippet code

library/cloud/ec2_elb_lb

@@ -21,7 +21,7 @@ description: Creates or destroys Amazon ELB.
 short_description: Creates or destroys Amazon ELB.
   - Returns information about the load balancer.
   - Will be marked changed when called only if state is changed.
-version_added: "1.4"
+version_added: "1.5"
 requirements: [ "boto" ]
 author: Jim Dalton
 options:
@@ -161,15 +161,6 @@ EXAMPLES = """
 import sys
 import os
 
-AWS_REGIONS = ['ap-northeast-1',
-               'ap-southeast-1',
-               'ap-southeast-2',
-               'eu-west-1',
-               'sa-east-1',
-               'us-east-1',
-               'us-west-1',
-               'us-west-2']
-
 try:
     import boto
     import boto.ec2.elb
@@ -459,20 +450,21 @@ def main():
             purge_zones={'default': False, 'required': False,
                          'choices': BOOLEANS, 'type': 'bool'},
             health_check={'default': None, 'required': False, 'type': 'dict'},
-            aws_secret_key={'default': None,
-                            'aliases': ['ec2_secret_key', 'secret_key'],
+            ec2_secret_key={'default': None,
+                            'aliases': ['aws_secret_key', 'secret_key'],
                             'no_log': True},
-            aws_access_key={'default': None,
-                            'aliases': ['ec2_access_key', 'access_key']},
+            ec2_access_key={'default': None,
+                            'aliases': ['aws_access_key', 'access_key']},
             region={'default': None, 'required': False,
                     'aliases': ['aws_region', 'ec2_region'],
                     'choices': AWS_REGIONS},
         )
     )
 
-    aws_secret_key = module.params['aws_secret_key']
-    aws_access_key = module.params['aws_access_key']
-    region = module.params['region']
+    # def get_ec2_creds(module):
+    #   return ec2_url, ec2_access_key, ec2_secret_key, region
+    ec2_url, aws_access_key, aws_secret_key, region = get_ec2_creds(module)
+
     name = module.params['name']
     state = module.params['state']
     listeners = module.params['listeners']
@@ -487,27 +479,6 @@ def main():
     if state == 'present' and not zones:
         module.fail_json(msg="At least one availability zone is required for ELB creation")
 
-    if not aws_secret_key:
-        if 'AWS_SECRET_KEY' in os.environ:
-            aws_secret_key = os.environ['AWS_SECRET_KEY']
-        elif 'EC2_SECRET_KEY' in os.environ:
-            aws_secret_key = os.environ['EC2_SECRET_KEY']
-
-    if not aws_access_key:
-        if 'AWS_ACCESS_KEY' in os.environ:
-            aws_access_key = os.environ['AWS_ACCESS_KEY']
-        elif 'EC2_ACCESS_KEY' in os.environ:
-            aws_access_key = os.environ['EC2_ACCESS_KEY']
-
-    if not region:
-        if 'AWS_REGION' in os.environ:
-            region = os.environ['AWS_REGION']
-        elif 'EC2_REGION' in os.environ:
-            region = os.environ['EC2_REGION']
-
-    if not region:
-        module.fail_json(msg=str("Either region or EC2_REGION environment variable must be set."))
-
     elb_man = ElbManager(module, name, listeners, purge_listeners, zones,
                          purge_zones, health_check, aws_access_key,
                          aws_secret_key, region=region)
@@ -524,7 +495,8 @@ def main():
 
     module.exit_json(**ec2_facts_result)
 
-# this is magic, see lib/ansible/module_common.py
-#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
+# import module snippets
+from ansible.module_utils.basic import *
+from ansible.module_utils.ec2 import *
 
 main()