Declare supported ABIs in dEQP test descriptors.

Add "abis" attribute to dEQP test case descriptor XMLs during the
CTS build by creating a dummy dEQP project under cts from which
the test descriptors depend on. Declaring supported ABIs prevents
dEQP tests from being run on an unsupported ABI.

Supported ABIs are queried by generating a test descriptor xml for
a dummy test list using the cts-xml-generator and then parsing the
result. The dEQP test descriptor XML templates are then patched
with the current ABIs.

Bug: 17956011
Change-Id: I3761c61d197523e0e9033dbe57e49e21ca2ad435
diff --git a/build/deqp_dummy_test_list b/build/deqp_dummy_test_list
new file mode 100644
index 0000000..6bf22aa
--- /dev/null
+++ b/build/deqp_dummy_test_list
@@ -0,0 +1,3 @@
+suite:TestSuite
+case:TEST_CASE_NAME
+test:TEST_NAME