Use mergeMwGlobalArrayValue in AutoLoaderTest::setUp

Change-Id: Ieb7835855a28d1602ac357b51197cb66d9200209
Use mergeMwGlobalArrayValue in ApiOptionsTest

Change-Id: Ic0a9ceab9e8fad7c408e32ba110a3543ef28b59e
Use mergeMwGlobalArrayValue in LocalisationCacheTest

Change-Id: I8cfe494d159101306c699169dd224c3bea65c753
Merge "Use mergeMwGlobalArrayValue in ApiOptionsTest"
Merge "Use mergeMwGlobalArrayValue in LocalisationCacheTest"
Merge "Use mergeMwGlobalArrayValue in AutoLoaderTest::setUp"