Update failing specs around Chef::Config across versions of Chef.

lib/chef/knife/server_bootstrap_base.rb

@@ -107,11 +107,11 @@ def validate!
             "the setup instructions at http://fnichol.github.io/knife-server/"
 
         # rubocop:disable Style/DeprecatedHashMethods
-        if !Chef::Config.has_key?(:node_name)
+        if Chef::Config[:node_name].nil?
           ui.error knife_fail.gsub(/{{KEY}}/, "node_name")
           exit 1
         end
-        if !Chef::Config.has_key?(:client_key)
+        if Chef::Config[:client_key].nil?
           ui.error knife_fail.gsub(/{{KEY}}/, "client_key")
           exit 1
         end

spec/chef/knife/server_bootstrap_ec2_spec.rb

@@ -251,13 +251,13 @@
     let(:credentials)     { double.as_null_object }
 
     it "exits if Chef::Config[:node_name] is missing" do
-      Chef::Config.delete(:node_name)
+      Chef::Config[:node_name] = nil
 
       expect { @knife.run }.to raise_error SystemExit
     end
 
     it "exits if Chef::Config[:client_key] is missing" do
-      Chef::Config.delete(:client_key)
+      Chef::Config[:client_key] = nil
 
       expect { @knife.run }.to raise_error SystemExit
     end

spec/chef/knife/server_bootstrap_linode_spec.rb

@@ -226,13 +226,13 @@
     let(:credentials) { double.as_null_object }
 
     it "exits if Chef::Config[:node_name] is missing" do
-      Chef::Config.delete(:node_name)
+      Chef::Config[:node_name] = nil
 
       expect { @knife.run }.to raise_error SystemExit
     end
 
     it "exits if Chef::Config[:client_key] is missing" do
-      Chef::Config.delete(:client_key)
+      Chef::Config[:client_key] = nil
 
       expect { @knife.run }.to raise_error SystemExit
     end

spec/chef/knife/server_bootstrap_openstack_spec.rb

@@ -228,8 +228,14 @@
     let(:ssh)         { double }
     let(:credentials) { double.as_null_object }
 
+    it "exits if Chef::Config[:node_name] is missing" do
+      Chef::Config[:node_name] = nil
+
+      expect { @knife.run }.to raise_error SystemExit
+    end
+
     it "exits if Chef::Config[:client_key] is missing" do
-      Chef::Config.delete(:client_key)
+      Chef::Config[:client_key] = nil
 
       expect { @knife.run }.to raise_error SystemExit
     end

spec/chef/knife/server_bootstrap_standalone_spec.rb

@@ -242,13 +242,13 @@
     let(:credentials) { double.as_null_object }
 
     it "exits if Chef::Config[:node_name] is missing" do
-      Chef::Config.delete(:node_name)
+      Chef::Config[:node_name] = nil
 
       expect { @knife.run }.to raise_error SystemExit
     end
 
     it "exits if Chef::Config[:client_key] is missing" do
-      Chef::Config.delete(:client_key)
+      Chef::Config[:client_key] = nil
 
       expect { @knife.run }.to raise_error SystemExit
     end