Mock url_available and ntp_available functions

With the addition of the url_available and ntp_available puppet
functions as part of the connectivity tests, we need to mock them out
for our noop tests so we don't actually fail when an test url is used.

Change-Id: I578e266e931f12d2e620a80994257871181e9f9b
Partial-Bug: 1261940
Closes-Bug: 1455702

tests/noop/spec/hosts/netconfig/connectivity_tests_spec.rb

@@ -3,5 +3,10 @@ require 'shared-examples'
 manifest = 'netconfig/connectivity_tests.pp'
 
 describe manifest do
+  before(:each) {
+    Puppet::Parser::Functions.newfunction(:url_available) { |args|
+      return true
+    }
+  }
   test_ubuntu_and_centos manifest
 end

tests/noop/spec/hosts/ntp/ntp-check_spec.rb

@@ -3,5 +3,10 @@ require 'shared-examples'
 manifest = 'ntp/ntp-check.pp'
 
 describe manifest do
+  before(:each) {
+    Puppet::Parser::Functions.newfunction(:ntp_available) { |args|
+      return true
+    }
+  }
   test_ubuntu_and_centos manifest
 end