Remove Trusty support from plugins role

Change-Id: Ibab5aa0e202a427563e74a4356ba52bc70d7042c
Implements: blueprint trusty-removal

Vagrantfile

@@ -1,5 +1,5 @@
 Vagrant.configure(2) do |config|
-  config.vm.box = "ubuntu/trusty64"
+  config.vm.box = "ubuntu/xenial64"
   config.vm.provider "virtualbox" do |v|
     v.memory = 2048
     v.cpus = 2
@@ -10,4 +10,4 @@ Vagrant.configure(2) do |config|
     apt-get update
     ./run_tests.sh
   SHELL
-end
+end

bindep.txt

@@ -32,7 +32,7 @@ libselinux-python [platform:rpm]
 # For SSL SNI support
 python-pyasn1               [platform:dpkg]
 python-openssl              [platform:dpkg]
-python-ndg-httpsclient      [platform:ubuntu !platform:ubuntu-trusty]
+python-ndg-httpsclient      [platform:ubuntu]
 python2-pyasn1              [platform:rpm]
 pyOpenSSL                   [platform:rpm]
 python-ndg_httpsclient      [platform:rpm]

meta/main.yml

@@ -22,7 +22,7 @@ galaxy_info:
   platforms:
     - name: Ubuntu
       versions:
-        - trusty
+        - xenial
   categories:
     - cloud
     - rabbitmq