Use dedicated cert for static shared lib tests

Packages using a static shared lib need to refer it by name,
version, and SHA-256 of signing cert. However, when CTS is
build for release the cert used to sign apps that do not
explicitly specify a signing cert changes as a result the
static shared lib tests fail as the app consumer refers to
the worng cert SHA-256. This change fixes the user cert.

Test: All static shared lib CTS tests now pass

bug:34712107

Change-Id: Ibfc37bf5f136d708bf449a24432e4f4c51f571b0
diff --git a/hostsidetests/os/test-apps/StaticSharedLibProviderApp2/Android.mk b/hostsidetests/os/test-apps/StaticSharedLibProviderApp2/Android.mk
index 8717c90..41d1eec 100644
--- a/hostsidetests/os/test-apps/StaticSharedLibProviderApp2/Android.mk
+++ b/hostsidetests/os/test-apps/StaticSharedLibProviderApp2/Android.mk
@@ -24,6 +24,8 @@
 
 LOCAL_PACKAGE_NAME := CtsStaticSharedLibProviderApp2
 
+LOCAL_CERTIFICATE := cts/hostsidetests/appsecurity/certs/keysets/cts-keyset-test-b
+
 LOCAL_COMPATIBILITY_SUITE := cts
 
 LOCAL_AAPT_FLAGS := --shared-lib