BVTCK-32 Adding tests for BootstrapConfiguration#getValidatedExecutableTypes()
BVTCK-32 Using wildcard constructor in tests as enabled by BVAL-358
BVTCK-32 Enabling tests fixed by HV-646, HV-664 and HV-677
BVTCK-32 Enabling and fixing tests related to HV-679
BVTCK-32 Fixing wrong tests working on the assumption that null could passed as value to validateConstructorReturnValue()
BVTCK-32 Enabling tests fixed by HV-673