Adding the cloud DNS API library and related methods

we setup DNS when a VM is created and tear it down when a VM is deleted
the DNS zone should exist already and is referenced by a provider setting
the dns zone is also set in order to use it for vm_ready? instead of the global
domain
instances have a label that identifies which project they belong to, so
it can be used for FW rules

spec/unit/providers/gce_spec.rb

@@ -11,6 +11,7 @@ describe 'Vmpooler::PoolManager::Provider::Gce' do
   let(:metrics) { Vmpooler::Metrics::DummyStatsd.new }
   let(:poolname) { 'debian-9' }
   let(:provider_options) { { 'param' => 'value' } }
+  # let(:project) { 'vmpooler-test' }
   let(:project) { 'dio-samuel-dev' }
   let(:zone) { 'us-west1-b' }
   let(:config) { YAML.load(<<-EOT
@@ -23,7 +24,10 @@ describe 'Vmpooler::PoolManager::Provider::Gce' do
     connection_pool_timeout: 1
     project: '#{project}'
     zone: '#{zone}'
-    network_name: 'global/networks/default'
+    network_name: global/networks/default
+    # network_name: 'projects/itsysopsnetworking/global/networks/shared1'
+    dns_zone_resource_name: 'example-com'
+    dns_zone: 'example.com'
 :pools:
   - name: '#{poolname}'
     alias: [ 'mockpool' ]
@@ -32,13 +36,13 @@ describe 'Vmpooler::PoolManager::Provider::Gce' do
     timeout: 10
     ready_ttl: 1440
     provider: 'gce'
-    network_name: 'default'
+    # subnetwork_name: 'projects/itsysopsnetworking/regions/us-west1/subnetworks/vmpooler-test'
     machine_type: 'zones/#{zone}/machineTypes/e2-micro'
 EOT
     )
   }
 
-  let(:vmname) { 'vm16' }
+  let(:vmname) { 'vm17' }
   let(:connection) { MockComputeServiceConnection.new }
   let(:redis_connection_pool) do
     Vmpooler::PoolManager::GenericConnectionPool.new(
@@ -80,11 +84,44 @@ EOT
       # result = subject.create_snapshot(poolname, vmname, "sams")
       # result = subject.revert_snapshot(poolname, vmname, "sams")
       # puts subject.get_vm(poolname, vmname)
+      result = subject.create_vm(poolname, vmname)
       result = subject.destroy_vm(poolname, vmname)
     end
 
-    skip 'debug' do
-      puts subject.purge_unconfigured_resources(['foo', '', 'blah'])
+    context 'in itsysops' do
+      let(:vmname) { "instance-10" }
+      let(:project) { 'vmpooler-test' }
+      let(:config) { YAML.load(<<-EOT
+---
+:config:
+  max_tries: 3
+  retry_factor: 10
+:providers:
+  :gce:
+    connection_pool_timeout: 1
+    project: '#{project}'
+    zone: '#{zone}'
+    network_name: 'projects/itsysopsnetworking/global/networks/shared1'
+    dns_zone_resource_name: 'test-vmpooler-puppet-net'
+    dns_zone: 'test.vmpooler.puppet.net'
+:pools:
+  - name: '#{poolname}'
+    alias: [ 'mockpool' ]
+    template: 'projects/debian-cloud/global/images/family/debian-9'
+    size: 5
+    timeout: 10
+    ready_ttl: 1440
+    provider: 'gce'
+    subnetwork_name: 'projects/itsysopsnetworking/regions/us-west1/subnetworks/vmpooler-test'
+    machine_type: 'zones/#{zone}/machineTypes/e2-micro'
+      EOT
+      ) }
+      skip 'gets a vm' do
+        result = subject.create_vm(poolname, vmname)
+        #subject.get_vm(poolname, vmname)
+        #subject.dns_teardown({'name' => vmname})
+        # subject.dns_setup({'name' => vmname, 'ip' => '1.2.3.5'})
+      end
     end
   end