kvo static rules (#1425)

Author: tburgin

Diff for: Source/common/SNTConfigurator.m

@@ -368,7 +368,12 @@ + (NSSet *)keyPathsForValuesAffectingFileChangesPrefixFiltersKey {
 }
 
 + (NSSet *)keyPathsForValuesAffectingStaticRules {
-  return [self configStateSet];
+  static NSSet *set;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    set = [NSSet setWithObject:NSStringFromSelector(@selector(cachedStaticRules))];
+  });
+  return set;
 }
 
 + (NSSet *)keyPathsForValuesAffectingSyncBaseURL {

Diff for: Source/santad/Santad.mm

@@ -315,12 +315,9 @@ void SantadMain(std::shared_ptr<EndpointSecurityAPI> esapi, std::shared_ptr<Logg
                                  }],
     [[SNTKVOManager alloc] initWithObject:configurator
                                  selector:@selector(staticRules)
-                                     type:[NSArray class]
-                                 callback:^(NSArray *oldValue, NSArray *newValue) {
-                                   NSSet *oldValueSet = [NSSet setWithArray:oldValue ?: @[]];
-                                   NSSet *newValueSet = [NSSet setWithArray:newValue ?: @[]];
-
-                                   if ([oldValueSet isEqualToSet:newValueSet]) {
+                                     type:[NSDictionary class]
+                                 callback:^(NSDictionary *oldValue, NSDictionary *newValue) {
+                                   if ([oldValue isEqualToDictionary:newValue]) {
                                      return;
                                    }