Make MdcModule public for access in tests which don't rely on MiskTestingServiceModule (#3156)

Author: mmollaverdi

Diff for: misk/api/misk.api

@@ -835,6 +835,10 @@ public final class misk/jvm/JvmManagementFactoryModule : misk/inject/KInstallOnc
 	public final fun provideRuntimeMxBean ()Ljava/lang/management/RuntimeMXBean;
 }
 
+public final class misk/logging/MdcModule : misk/inject/KInstallOnceModule {
+	public fun <init> ()V
+}
+
 public final class misk/logging/MiskMdc : misk/logging/Mdc {
 	public static final field INSTANCE Lmisk/logging/MiskMdc;
 	public fun clear ()V

Diff for: misk/src/main/kotlin/misk/logging/MdcModule.kt

@@ -1,8 +1,8 @@
 package misk.logging
 
-import misk.inject.KAbstractModule
+import misk.inject.KInstallOnceModule
 
-internal class MdcModule : KAbstractModule() {
+class MdcModule : KInstallOnceModule() {
 
   override fun configure() {
     bind<Mdc>().toInstance(MiskMdc)