[Revalidation] Add configurable overrides for revalidation rates (#588)

This will let us speed up/slow down the revalidation job by changing Octopus variables and creating a new deployment.

Addresses https://github.com/NuGet/Engineering/issues/1789

Author: loic-sharma

src/NuGet.Services.Revalidate/Job.cs

@@ -32,6 +32,7 @@ public class Job : ValidationJobBase
         private const string RebuildPreinstalledSetArgumentName = "RebuildPreinstalledSet";
         private const string InitializeArgumentName = "Initialize";
         private const string VerifyInitializationArgumentName = "VerifyInitialization";
+
         private const string JobConfigurationSectionName = "RevalidateJob";
 
         private static readonly TimeSpan RetryLaterSleepDuration = TimeSpan.FromMinutes(5);
@@ -112,6 +113,7 @@ await scope.ServiceProvider
         protected override void ConfigureJobServices(IServiceCollection services, IConfigurationRoot configurationRoot)
         {
             services.Configure<RevalidationConfiguration>(configurationRoot.GetSection(JobConfigurationSectionName));
+
             services.AddSingleton(provider => provider.GetRequiredService<IOptionsSnapshot<RevalidationConfiguration>>().Value);
             services.AddSingleton(provider => provider.GetRequiredService<IOptionsSnapshot<RevalidationConfiguration>>().Value.Initialization);
             services.AddSingleton(provider => provider.GetRequiredService<IOptionsSnapshot<RevalidationConfiguration>>().Value.Health);

src/NuGet.Services.Revalidate/Settings/dev.json

@@ -16,8 +16,8 @@
       "ComponentPath": "NuGet/Package Publishing"
     },
 
-    "MinPackageEventRate": 120,
-    "MaxPackageEventRate": 400,
+    "MinPackageEventRate": "#{Jobs.nuget.services.revalidation.MinPackageEventRate}",
+    "MaxPackageEventRate": "#{Jobs.nuget.services.revalidation.MaxPackageEventRate}",
 
     "RetryLaterSleep": "00:00:30",
 

src/NuGet.Services.Revalidate/Settings/int.json

@@ -16,8 +16,8 @@
       "ComponentPath": "NuGet/Package Publishing"
     },
 
-    "MinPackageEventRate": 120,
-    "MaxPackageEventRate": 400,
+    "MinPackageEventRate": "#{Jobs.nuget.services.revalidation.MinPackageEventRate}",
+    "MaxPackageEventRate": "#{Jobs.nuget.services.revalidation.MaxPackageEventRate}",
 
     "RetryLaterSleep": "00:00:30",
 

src/NuGet.Services.Revalidate/Settings/prod.json

@@ -16,8 +16,8 @@
       "ComponentPath": "NuGet/Package Publishing"
     },
 
-    "MinPackageEventRate": 120,
-    "MaxPackageEventRate": 400,
+    "MinPackageEventRate": "#{Jobs.nuget.services.revalidation.MinPackageEventRate}",
+    "MaxPackageEventRate": "#{Jobs.nuget.services.revalidation.MaxPackageEventRate}",
 
     "RetryLaterSleep": "00:00:30",