Introduced forceResetCarrierKeysForImsiEncryption TestAPI to delete Imsi Certificate.

CTS test case required to delete the IMSI certificate multiple times, where as
Framework allows to delete it only once in 12 Hours.
This API will delete the IMSI certificate with out any condition check.

Bug: 235296888
Test: cts-tradefed run cts -m CtsTelephonyTestCases
-t android.telephony.cts.TelephonyManagerTest

Flag: com.android.internal.telephony.flags.force_imsi_certificate_delete

Change-Id: I3bfb6b322388c4f39e3370c6c1e1792dfe48ded4
diff --git a/flags/uicc.aconfig b/flags/uicc.aconfig
index f9b208b..aed4bff 100644
--- a/flags/uicc.aconfig
+++ b/flags/uicc.aconfig
@@ -96,3 +96,14 @@
     description: "This flag controls to get a carrier id using a carrier identifier."
     bug:"378778278"
 }
+
+# OWNER=arunvoddu TARGET=25Q2
+flag {
+    name: "force_imsi_certificate_delete"
+    namespace: "telephony"
+    description: "This flag controls the IMSI certificate delete with out any condition."
+    bug:"235296888"
+    metadata {
+        purpose: PURPOSE_BUGFIX
+    }
+}