[BUG] Change to POST (instead of GET) when uploading account certificate

[andrijapanicsb]

Account certificates (whatever they are, and for whatever they are used…)

• Old UI uses POST to post data, and I assume this is a valid way since the data can be huge (certificate length, key length, chain length etc…)
• Primate sends it via simple GET – I’m questioning if this is wrong and should be fixed as with long text it will cause HTTP error with too long request etc.

[yadvr]

The upload cert feature in Accounts -> SSL cert tab is not generally used by CloudStack LB (maybe netscaler etc.). If it's simple fix go ahead @utchoang or @davidjumani - otherwise we can push it to 1.1

[davidjumani]

Doesn't seem too hard. I'll look into it

[yadvr]

Moving this to 1.1, not generally used or that important; get request seems to work OK.