be explicit about urllib import and remove conditional urllib(2) import

urllib and urllib2 have been in the python stdlib since at least
python-2.3.  There's no reason to conditionalize it.

Fixes https://github.com/ansible/ansible/issues/11322

monitoring/airbrake_deployment.py

@@ -61,8 +61,7 @@ options:
     default: 'yes'
     choices: ['yes', 'no']
 
-# informational: requirements for nodes
-requirements: [ urllib, urllib2 ]
+requirements: []
 '''
 
 EXAMPLES = '''
@@ -72,6 +71,8 @@ EXAMPLES = '''
                        revision=4.2
 '''
 
+import urllib
+
 # ===========================================
 # Module execution.
 #

monitoring/newrelic_deployment.py

@@ -72,8 +72,7 @@ options:
     choices: ['yes', 'no']
     version_added: 1.5.1
 
-# informational: requirements for nodes
-requirements: [ urllib, urllib2 ]
+requirements: []
 '''
 
 EXAMPLES = '''
@@ -83,6 +82,8 @@ EXAMPLES = '''
                        revision=1.0
 '''
 
+import urllib
+
 # ===========================================
 # Module execution.
 #

monitoring/rollbar_deployment.py

@@ -76,6 +76,7 @@ EXAMPLES = '''
                       comment='Test Deploy'
 '''
 
+import urllib
 
 def main():
 

network/citrix/netscaler.py

@@ -81,7 +81,7 @@ options:
     default: 'yes'
     choices: ['yes', 'no']
 
-requirements: [ "urllib", "urllib2" ]
+requirements: []
 author: "Nandor Sivok (@dominis)"
 '''
 
@@ -99,7 +99,7 @@ ansible host -m netscaler -a "nsc_host=nsc.example.com user=apiuser password=api
 
 import base64
 import socket
-
+import urllib
 
 class netscaler(object):
 

network/dnsmadeeasy.py

@@ -86,7 +86,7 @@ notes:
   - The DNS Made Easy service requires that machines interacting with the API have the proper time and timezone set. Be sure you are within a few seconds of actual time by using NTP. 
   - This module returns record(s) in the "result" element when 'state' is set to 'present'. This value can be be registered and used in your playbooks.
   
-requirements: [ urllib, urllib2, hashlib, hmac ]
+requirements: [ hashlib, hmac ]
 author: "Brice Burgess (@briceburg)"
 '''
 
@@ -113,6 +113,8 @@ EXAMPLES = '''
 # DNSMadeEasy module specific support methods.
 #
 
+import urllib
+
 IMPORT_ERROR = None
 try:
     import json

notification/flowdock.py

@@ -85,8 +85,7 @@ options:
     choices: ['yes', 'no']
     version_added: 1.5.1
 
-# informational: requirements for nodes
-requirements: [ urllib, urllib2 ]
+requirements: [ ]
 '''
 
 EXAMPLES = '''
@@ -104,6 +103,8 @@ EXAMPLES = '''
             tags=tag1,tag2,tag3
 '''
 
+import urllib
+
 # ===========================================
 # Module execution.
 #

notification/grove.py

@@ -49,6 +49,8 @@ EXAMPLES = '''
     message=deployed {{ target }}
 '''
 
+import urllib
+
 BASE_URL = 'https://grove.io/api/notice/%s/'
 
 # ==============================================================

notification/hipchat.py

@@ -62,8 +62,7 @@ options:
     version_added: 1.6.0
 
 
-# informational: requirements for nodes
-requirements: [ urllib, urllib2 ]
+requirements: [ ]
 author: "WAKAYAMA Shirou (@shirou), BOURDEL Paul (@pb8226)"
 '''
 
@@ -75,6 +74,8 @@ EXAMPLES = '''
 # HipChat module specific support methods.
 #
 
+import urllib
+
 DEFAULT_URI = "https://api.hipchat.com/v1"
 
 MSG_URI_V1 = "/rooms/message"

notification/nexmo.py

@@ -71,6 +71,7 @@ EXAMPLES = """
     msg: "{{ inventory_hostname }} completed"
 """
 
+import urllib
 
 NEXMO_API = 'https://rest.nexmo.com/sms/json'
 

notification/sendgrid.py

@@ -84,10 +84,7 @@ EXAMPLES = '''
 # =======================================
 # sendgrid module support methods
 #
-try:
-    import urllib, urllib2
-except ImportError:
-    module.fail_json(msg="urllib and urllib2 are required")
+import urllib, urllib2
 
 import base64
 

notification/twilio.py

@@ -104,10 +104,7 @@ EXAMPLES = '''
 # =======================================
 # twilio module support methods
 #
-try:
-    import urllib, urllib2
-except ImportError:
-    module.fail_json(msg="urllib and urllib2 are required")
+import urllib, urllib2
 
 import base64