CASSJAVA-103: Quoting column identifiers in DefaultCreateIndex

[lukasz-antoniak]

JIRA link: CASSJAVA-103.

In all schema builder classes (e.g. DefaultCreateTable), column identifiers are rendered using CqlIdentifier.asCql(true) method. This was not the case in DefaultCreateIndex, which led to missing quotes in CQL statement.

createIndex(CqlIdentifier.fromInternal("bAr"))
   .onTable(CqlIdentifier.fromInternal("xY"))
   .andColumn(CqlIdentifier.fromInternal("aB"))

Result: CREATE INDEX "bAr" ON "xY" (aB)
Expected: CREATE INDEX "bAr" ON "xY" ("aB")

Added test in CreateTableTest to make sure same behaviour applies there.