Test PINT with --all-features in CI

[clearloop]

Summary

Should we test --all-features in our CI?

It seems some features could not be compiled in pallet-collective and pallet-xcm, I found this problem in #45

error[E0046]: not all trait items implemented, missing: `successful_origin`
   --> /Users/clearloop/.cargo/git/checkouts/substrate-7e08433d4c370a21/68cfc32/frame/collective/src/lib.rs:884:1
    |
884 | / impl<
885 | |     O: Into<Result<RawOrigin<AccountId, I>, O>> + From<RawOrigin<AccountId, I>>,
886 | |     AccountId: Default,
887 | |     I,
...   |
900 | |     }
901 | | }
    | |_^ missing `successful_origin` in implementation
    |
    = help: implement the missing item: `fn successful_origin() -> OuterOrigin { todo!() }`

error[E0046]: not all trait items implemented, missing: `successful_origin`
   --> /Users/clearloop/.cargo/git/checkouts/substrate-7e08433d4c370a21/68cfc32/frame/collective/src/lib.rs:904:1
    |
904 | / impl<
905 | |     O: Into<Result<RawOrigin<AccountId, I>, O>> + From<RawOrigin<AccountId, I>>,
906 | |     N: U32,
907 | |     AccountId,
...   |
921 | |     }
922 | | }
    | |_^ missing `successful_origin` in implementation
    |
    = help: implement the missing item: `fn successful_origin() -> OuterOrigin { todo!() }`

error[E0046]: not all trait items implemented, missing: `successful_origin`
   --> /Users/clearloop/.cargo/git/checkouts/substrate-7e08433d4c370a21/68cfc32/frame/collective/src/lib.rs:927:1
    |
927 | / impl<
928 | |     O: Into<Result<RawOrigin<AccountId, I>, O>> + From<RawOrigin<AccountId, I>>,
929 | |     N: U32,
930 | |     D: U32,
...   |
945 | |     }
946 | | }
    | |_^ missing `successful_origin` in implementation
    |
    = help: implement the missing item: `fn successful_origin() -> OuterOrigin { todo!() }`

error[E0046]: not all trait items implemented, missing: `successful_origin`
   --> /Users/clearloop/.cargo/git/checkouts/substrate-7e08433d4c370a21/68cfc32/frame/collective/src/lib.rs:951:1
    |
951 | / impl<
952 | |     O: Into<Result<RawOrigin<AccountId, I>, O>> + From<RawOrigin<AccountId, I>>,
953 | |     N: U32,
954 | |     D: U32,
...   |
969 | |     }
970 | | }
    | |_^ missing `successful_origin` in implementation
    |
    = help: implement the missing item: `fn successful_origin() -> OuterOrigin { todo!() }`

   Compiling pallet-multisig v3.0.0 (https://github.com/paritytech/substrate.git?branch=rococo-v1#68cfc326)
error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0046`.
error: could not compile `pallet-collective`

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error[E0046]: not all trait items implemented, missing: `successful_origin`
   --> /Users/clearloop/.cargo/git/checkouts/polkadot-4038f27d5e4ea2e8/943038a/xcm/pallet-xcm/src/lib.rs:162:1
    |
162 | / impl<O: OriginTrait + From<Origin>, F: Filter<MultiLocation>> EnsureOrigin<O> for EnsureXcm<F>
163 | |     where O::PalletsOrigin: From<Origin> + TryInto<Origin, Error=O::PalletsOrigin>
164 | | {
165 | |     type Success = MultiLocation;
...   |
181 | |     }
182 | | }
    | |_^ missing `successful_origin` in implementation
    |
    = help: implement the missing item: `fn successful_origin() -> OuterOrigin { todo!() }`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0046`.
error: build failed

Repreduce

$ cargo test --all-features