Fix most tests on jruby

.evergreen/config.yml

@@ -729,10 +729,10 @@ buildvariants:
     ruby: "jruby-9.2"
     mongodb-version: "4.2"
     topology: "*"
-    os: rhel70
+    os: ubuntu1604
   display_name: "${mongodb-version} ${topology} ${auth-and-ssl} ${ruby}"
   tasks:
-     - name: "test"
+    - name: "test-mlaunch"
 
 -
   matrix_name: "jruby-noauth"
@@ -741,10 +741,10 @@ buildvariants:
     ruby: "jruby-9.2"
     mongodb-version: "2.6"
     topology: "*"
-    os: rhel70
+    os: ubuntu1604
   display_name: "${mongodb-version} ${topology} ${auth-and-ssl} ${ruby}"
   tasks:
-     - name: "test"
+    - name: "test-mlaunch"
 
 -
   matrix_name: "zlib-auth"

lib/mongo/socket.rb

@@ -63,7 +63,16 @@ class Socket
     def alive?
       sock_arr = [ @socket ]
       if Kernel::select(sock_arr, nil, sock_arr, 0)
-        eof?
+        # The eof? call is supposed to return immediately since select
+        # indicated the socket is readable. However, if @socket is an SSL
+        # socket, eof? can block anyway - see RUBY-2140.
+        begin
+          Timeout.timeout(0.1) do
+            eof?
+          end
+        rescue ::Timeout::Error
+          true
+        end
       else
         true
       end

spec/integration/retryable_errors_spec.rb

@@ -24,7 +24,7 @@
     end
 
     after do
-      ClusterTools.instance.direct_client_for_each_server do |client|
+      ClusterTools.instance.direct_client_for_each_data_bearing_server do |client|
         client.use(:admin).database.command(clear_fail_point_command)
       end
     end
@@ -62,7 +62,7 @@
           server.monitor.stop!
         end
 
-        ClusterTools.instance.direct_client_for_each_server do |client|
+        ClusterTools.instance.direct_client_for_each_data_bearing_server do |client|
           client.use(:admin).database.command(fail_point_command)
         end
       end

spec/mongo/auth/scram/conversation_spec.rb

@@ -35,6 +35,8 @@
     end
 
     describe '#start' do
+      # Test uses global assertions
+      clean_slate
 
       let(:query) do
         conversation.start(nil)

spec/mongo/collection_spec.rb

@@ -278,9 +278,9 @@
           require_topology :replica_set
 
           let(:client_options) do
-            {
+            SpecConfig.instance.auth_options.merge(
               read: { mode: :primary_preferred },
-            }
+            )
           end
 
           let(:subscriber) { EventSubscriber.new }