Migration testing runtime API/Bot (#8038)

* A clean new attempt

* Checkpoint to move remote.

* A lot of dependency wiring to make it feature gated.

* bad macro, bad macro.

* Undo the DB mess.

* Update frame/support/src/traits.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Apply suggestions from code review

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* unbreak the build

* Update frame/try-runtime/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update utils/frame/try-runtime/cli/Cargo.toml

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* Update frame/try-runtime/Cargo.toml

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* Address most review grumbles.

* Fix build

* Add some comments

* Remove allowing one pallet at a time.

* More grumbles.

* relocate remote-ext

* Fix build

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/Cargo.lock

@@ -1861,6 +1861,17 @@ dependencies = [
  "sp-api",
 ]
 
+[[package]]
+name = "frame-try-runtime"
+version = "0.9.0"
+dependencies = [
+ "frame-support",
+ "parity-scale-codec",
+ "sp-api",
+ "sp-runtime",
+ "sp-std",
+]
+
 [[package]]
 name = "fs-swap"
 version = "0.2.5"
@@ -3949,6 +3960,7 @@ dependencies = [
  "substrate-build-script-utils",
  "substrate-frame-cli",
  "tempfile",
+ "try-runtime-cli",
  "wasm-bindgen",
  "wasm-bindgen-futures",
 ]
@@ -4072,6 +4084,7 @@ dependencies = [
  "frame-system",
  "frame-system-benchmarking",
  "frame-system-rpc-runtime-api",
+ "frame-try-runtime",
  "hex-literal",
  "node-primitives",
  "pallet-assets",
@@ -6372,6 +6385,24 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "remote-externalities"
+version = "0.9.0"
+dependencies = [
+ "async-std",
+ "bincode",
+ "env_logger 0.8.2",
+ "futures 0.1.30",
+ "hex-literal",
+ "jsonrpc-core-client",
+ "log",
+ "sc-rpc",
+ "sc-rpc-api",
+ "sp-core",
+ "sp-io",
+ "tokio 0.1.22",
+]
+
 [[package]]
 name = "remove_dir_all"
 version = "0.5.3"
@@ -9898,6 +9929,27 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
+[[package]]
+name = "try-runtime-cli"
+version = "0.9.0"
+dependencies = [
+ "frame-try-runtime",
+ "log",
+ "parity-scale-codec",
+ "remote-externalities",
+ "sc-cli",
+ "sc-client-api",
+ "sc-executor",
+ "sc-service",
+ "sp-api",
+ "sp-blockchain",
+ "sp-core",
+ "sp-externalities",
+ "sp-runtime",
+ "sp-state-machine",
+ "structopt",
+]
+
 [[package]]
 name = "trybuild"
 version = "1.0.39"