Move IpSec associated files to f/b/packages/ConnectivityT

IpSecService is going to be moved into Connectivity mainline module.
Move all ipsec associated files to packages/ConnectivityT so that
it can be easily migrate these files to connectivity module after
clearing the hidden API usages.

Bug: 204153604
Test: build pass
      FrameworksNetTests
      CtsNetTestCases
Change-Id: I562b47f18e345988a2638cf886f86818f9144b91

framework-t/Sources.bp

@@ -100,6 +100,20 @@ filegroup {
     ],
 }
 
+// IpSec related libraries.
+
+filegroup {
+    name: "framework-connectivity-ipsec-sources",
+    srcs: [
+        "src/android/net/IIpSecService.aidl",
+        "src/android/net/IpSec*.*",
+    ],
+    path: "src",
+    visibility: [
+        "//visibility:private",
+    ],
+}
+
 // Connectivity-T common libraries.
 
 filegroup {
@@ -116,11 +130,10 @@ filegroup {
 filegroup {
     name: "framework-connectivity-tiramisu-sources",
     srcs: [
+        ":framework-connectivity-ipsec-sources",
         ":framework-connectivity-netstats-sources",
         ":framework-connectivity-nsd-sources",
         ":framework-connectivity-tiramisu-internal-sources",
     ],
-    visibility: [
+    visibility: ["//frameworks/base"],
-        "//frameworks/base",
-    ],
 }

service-t/Sources.bp

@@ -48,16 +48,28 @@ filegroup {
     ],
 }
 
+// IpSec related libraries.
+
+filegroup {
+    name: "services.connectivity-ipsec-sources",
+    srcs: [
+        "src/com/android/server/IpSecService.java",
+    ],
+    path: "src",
+    visibility: [
+        "//visibility:private",
+    ],
+}
+
 // Connectivity-T common libraries.
 
 filegroup {
     name: "services.connectivity-tiramisu-sources",
     srcs: [
+        ":services.connectivity-ipsec-sources",
         ":services.connectivity-netstats-sources",
         ":services.connectivity-nsd-sources",
     ],
     path: "src",
-    visibility: [
+    visibility: ["//frameworks/base/services/core"],
-        "//frameworks/base/services/core",
-    ],
 }