Updates ruby code affected by the secure server API change
diff --git a/src/ruby/bin/interop/interop_server.rb b/src/ruby/bin/interop/interop_server.rb
index b3b7d0c..0819ba9 100755
--- a/src/ruby/bin/interop/interop_server.rb
+++ b/src/ruby/bin/interop/interop_server.rb
@@ -176,12 +176,11 @@
 def main
   opts = parse_options
   host = "0.0.0.0:#{opts['port']}"
+  s = GRPC::RpcServer.new
   if opts['secure']
-    s = GRPC::RpcServer.new(creds: test_server_creds)
-    s.add_http2_port(host, true)
+    s.add_http2_port(host, test_server_creds)
     logger.info("... running securely on #{host}")
   else
-    s = GRPC::RpcServer.new
     s.add_http2_port(host)
     logger.info("... running insecurely on #{host}")
   end
diff --git a/src/ruby/bin/math_server.rb b/src/ruby/bin/math_server.rb
index 93277e3..5cc7613 100755
--- a/src/ruby/bin/math_server.rb
+++ b/src/ruby/bin/math_server.rb
@@ -173,12 +173,11 @@
     end
   end.parse!
 
+  s = GRPC::RpcServer.new
   if options['secure']
-    s = GRPC::RpcServer.new(creds: test_server_creds)
-    s.add_http2_port(options['host'], true)
+    s.add_http2_port(options['host'], test_server_creds)
     logger.info("... running securely on #{options['host']}")
   else
-    s = GRPC::RpcServer.new
     s.add_http2_port(options['host'])
     logger.info("... running insecurely on #{options['host']}")
   end
diff --git a/src/ruby/bin/noproto_server.rb b/src/ruby/bin/noproto_server.rb
index 435f8f4..9979cb7 100755
--- a/src/ruby/bin/noproto_server.rb
+++ b/src/ruby/bin/noproto_server.rb
@@ -95,12 +95,11 @@
     end
   end.parse!
 
+  s = GRPC::RpcServer.new
   if options['secure']
-    s = GRPC::RpcServer.new(creds: test_server_creds)
-    s.add_http2_port(options['host'], true)
+    s.add_http2_port(options['host'], test_server_creds)
     logger.info("... running securely on #{options['host']}")
   else
-    s = GRPC::RpcServer.new
     s.add_http2_port(options['host'])
     logger.info("... running insecurely on #{options['host']}")
   end
diff --git a/src/ruby/lib/grpc/generic/rpc_server.rb b/src/ruby/lib/grpc/generic/rpc_server.rb
index 6938f71..35e8402 100644
--- a/src/ruby/lib/grpc/generic/rpc_server.rb
+++ b/src/ruby/lib/grpc/generic/rpc_server.rb
@@ -81,7 +81,6 @@
                    max_waiting_requests:DEFAULT_MAX_WAITING_REQUESTS,
                    poll_period:INFINITE_FUTURE,
                    completion_queue_override:nil,
-                   creds:nil,
                    server_override:nil,
                    **kw)
       if completion_queue_override.nil?
@@ -95,13 +94,7 @@
       @cq = cq
 
       if server_override.nil?
-        if creds.nil?
-          srv = Core::Server.new(@cq, kw)
-        elsif !creds.is_a? Core::ServerCredentials
-          fail(ArgumentError, 'not a ServerCredentials')
-        else
-          srv = Core::Server.new(@cq, kw, creds)
-        end
+        srv = Core::Server.new(@cq, kw)
       else
         srv = server_override
         fail(ArgumentError, 'not a Server') unless srv.is_a? Core::Server
diff --git a/src/ruby/spec/client_server_spec.rb b/src/ruby/spec/client_server_spec.rb
index 030ff32..49a2d3b 100644
--- a/src/ruby/spec/client_server_spec.rb
+++ b/src/ruby/spec/client_server_spec.rb
@@ -95,7 +95,7 @@
   end
 
   def new_client_call
-    @ch.create_call('/method', 'localhost', deadline)
+    @ch.create_call('/method', 'foo.test.google.fr', deadline)
   end
 end
 
@@ -346,12 +346,12 @@
 describe 'the secure http client/server' do
   before(:example) do
     certs = load_test_certs
-    server_host = 'localhost:0'
+    server_host = '0.0.0.0:0'
     @client_queue = GRPC::Core::CompletionQueue.new
     @server_queue = GRPC::Core::CompletionQueue.new
     server_creds = GRPC::Core::ServerCredentials.new(nil, certs[1], certs[2])
-    @server = GRPC::Core::Server.new(@server_queue, nil, server_creds)
-    server_port = @server.add_http2_port(server_host, true)
+    @server = GRPC::Core::Server.new(@server_queue, nil)
+    server_port = @server.add_http2_port(server_host, server_creds)
     @server.start
     args = { Channel::SSL_TARGET => 'foo.test.google.fr' }
     @ch = Channel.new("0.0.0.0:#{server_port}", args,
@@ -362,11 +362,9 @@
     @server.close
   end
 
-  # TODO: uncomment after updating the to the new c api
-  # it_behaves_like 'basic GRPC message delivery is OK' do
-  # end
+  it_behaves_like 'basic GRPC message delivery is OK' do
+  end
 
-  # TODO: uncomment after updating the to the new c api
-  # it_behaves_like 'GRPC metadata delivery works OK' do
-  # end
+  it_behaves_like 'GRPC metadata delivery works OK' do
+  end
 end
diff --git a/src/ruby/spec/generic/rpc_server_spec.rb b/src/ruby/spec/generic/rpc_server_spec.rb
index e8c7060..d5421d4 100644
--- a/src/ruby/spec/generic/rpc_server_spec.rb
+++ b/src/ruby/spec/generic/rpc_server_spec.rb
@@ -164,19 +164,6 @@
       expect(&blk).to raise_error
     end
 
-    it 'can be created with the creds as valid ServerCedentials' do
-      certs = load_test_certs
-      server_creds = GRPC::Core::ServerCredentials.new(nil, certs[1], certs[2])
-      blk = proc do
-        opts = {
-          a_channel_arg: 'an_arg',
-          creds: server_creds
-        }
-        RpcServer.new(**opts)
-      end
-      expect(&blk).to_not raise_error
-    end
-
     it 'can be created with a server override' do
       opts = { a_channel_arg: 'an_arg', server_override: @server }
       blk = proc do
diff --git a/src/ruby/spec/server_spec.rb b/src/ruby/spec/server_spec.rb
index 5b81f19..a47e484 100644
--- a/src/ruby/spec/server_spec.rb
+++ b/src/ruby/spec/server_spec.rb
@@ -118,10 +118,11 @@
     end
 
     describe 'for secure servers' do
+      let(:cert) { create_test_cert }
       it 'runs without failing' do
         blk = proc do
           s = Server.new(@cq, nil)
-          s.add_http2_port('localhost:0', true)
+          s.add_http2_port('localhost:0', cert)
           s.close
         end
         expect(&blk).to_not raise_error
@@ -130,7 +131,7 @@
       it 'fails if the server is closed' do
         s = Server.new(@cq, nil)
         s.close
-        blk = proc { s.add_http2_port('localhost:0', true) }
+        blk = proc { s.add_http2_port('localhost:0', cert) }
         expect(&blk).to raise_error(RuntimeError)
       end
     end
@@ -138,7 +139,7 @@
 
   shared_examples '#new' do
     it 'takes a completion queue with nil channel args' do
-      expect { Server.new(@cq, nil, create_test_cert) }.to_not raise_error
+      expect { Server.new(@cq, nil) }.to_not raise_error
     end
 
     it 'does not take a hash with bad keys as channel args' do
@@ -195,14 +196,6 @@
     it_behaves_like '#new'
   end
 
-  describe '#new with a secure channel' do
-    def construct_with_args(a)
-      proc { Server.new(@cq, a, create_test_cert) }
-    end
-
-    it_behaves_like '#new'
-  end
-
   def start_a_server
     s = Server.new(@cq, nil)
     s.add_http2_port('0.0.0.0:0')