I don't think I've ever encountered anyone's saying "parliament" or its variations, with an extra syllable -- pronouncing the "a"; admittedly, I don't listen to the media.
Something I find a bit of an odd one: a good many people pronounce "police" one-syllable-wise: "pleece". Something I've never done. A person I know who does, is my pronunciationally rather bonkers friend whom I've mentioned upthread -- generally, his position is that one must pronounce words exactly as spelt, or the skies will fall: yet he invariably says "pleece". I'd take him to task about it; only no matter what is raised, he always has a "pat" answer...