Handle RESERVATION requests in updateRequestCounts

RESERVATION requests are effectively equivalent to REQUESTs in
NetworkAgent contexts.

Change-Id: I7534c4755543365153a9348ef7c6d0ada1b70cd5
Test: TH, though I am working on a CSL2capNetworkProviderTest
diff --git a/service/src/com/android/server/connectivity/NetworkAgentInfo.java b/service/src/com/android/server/connectivity/NetworkAgentInfo.java
index 2686e4a..e762a8e 100644
--- a/service/src/com/android/server/connectivity/NetworkAgentInfo.java
+++ b/service/src/com/android/server/connectivity/NetworkAgentInfo.java
@@ -1128,6 +1128,7 @@
         int delta = add ? +1 : -1;
         switch (request.type) {
             case REQUEST:
+            case RESERVATION:
                 mNumRequestNetworkRequests += delta;
                 break;