feat(e2e): add shortcut for proposing extrinsic (#353)

* feat(e2e): add shortcut for proposing extrinsic

* feat(e2e): remove committee config in the test entry

* feat(e2e): make process proposal works

* feat(asset-index): get back deposit call

* feat(e2e): get back setMetadata

* feat(e2e): order the votes of setMetadata

* feat(e2e): use finished field

* feat(e2e): order mapAssetPriceFeed

* feat(e2e): support proposals field in extrinsics

* feat(e2e): map asset with signed account

* feat(e2e): can queue 3 proposals

* feat(e2e): get back price-feed tests

* chore(e2e): annotate verification of withdraw

* chore(e2e): remove proposals field

* chore(e2e): focus on withdraw

* feat(runtime): move block interval to 1s