There is no custom message if fx applet blocked by default rule (DRS1.2)

For fx applet and default rule wit message tag in DRS, no custom message shown if applet was blocked.

Testsuite name: deploy/javafx
Test name(s):
LSPFXAutoTest::testLSPLocDefaultMessage_High
LSPFXAutoTest::testLSPLocDefaultMessage_VeryHigh
LSPFXAutoTest::testLSPCertDefaultMessage_High
LSPFXAutoTest::testLSPCertDefaultMessage_VeryHigh
LSPFXAutoJNLPTest::testLSPLocDefaultMessage_JNLP_High
LSPFXAutoJNLPTest::testLSPLocDefaultMessage_JNLP_VeryHigh
LSPFXAutoJNLPTest::testLSPCertDefaultMessage_JNLP_High
LSPFXAutoJNLPTest::testLSPCertDefaultMessage_JNLP_VeryHigh
Product(s) tested: jre 8u60 b05
OS/architecture: linux x64
Reproducible: Always
Is it a Regression: No
Is it a platform specific issue: No

Steps to reproduce:
1) import http://stt-13.ru.oracle.com/export/home0/testsuites/180_user_ws/msemenov/valid_selfsigned_100year_keystore.cert
2) install DeploymentRuleSet.jar from http://stt-13.ru.oracle.com/export/home0/testsuites/180_user_ws/msemenov/drs12/classes/LSP/DeploymentRuleSet.jar.default-CertMessage
3) open http://stt-13.ru.oracle.com/export/home0/testsuites/180_user_ws/msemenov/drs12/html/SelfsignedAllpermission.html
Actual result: there is no "TEST MESSAGE TEXT" in app blocked dialog
Expected result: text "TEST MESSAGE TEXT" should be in app blocked dialog

RULE LSPFXAutoTest::testLSPLocDefaultMessage_High any any
RULE LSPFXAutoTest::testLSPLocDefaultMessage_VeryHigh any any
RULE LSPFXAutoTest::testLSPCertDefaultMessage_High any any
RULE LSPFXAutoTest::testLSPCertDefaultMessage_VeryHigh any any
RULE LSPFXAutoJNLPTest::testLSPLocDefaultMessage_JNLP_High any any
RULE LSPFXAutoJNLPTest::testLSPLocDefaultMessage_JNLP_VeryHigh any any
RULE LSPFXAutoJNLPTest::testLSPCertDefaultMessage_JNLP_High any any
RULE LSPFXAutoJNLPTest::testLSPCertDefaultMessage_JNLP_VeryHigh any any
RULE LSPFXAutoJNLPTest::testLSPDefaultChecksumMessage_High any any
RULE LSPFXAutoTest::testLSPDefaultChecksumMessage_High any any