Feature/tor health checks (#426)

* wip

* wraps up core tor health check feature, still need to fix the boundaries with the rest of embassyd

* need to please borrow checker

* please the borrow checker

* wire it in

* finishes the feature

* Apply suggestions from code review

* fixes tor restart functionality

* makes tor replacement more resilient, adds embassyd service in init and replace

compat/Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "ahash"
 version = "0.7.4"
@@ -675,6 +677,12 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
 
+[[package]]
+name = "divrem"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69dde51e8fef5e12c1d65e0929b03d66e4c0c18282bc30ed2ca050ad6f44dd82"
+
 [[package]]
 name = "dotenv"
 version = "0.15.0"
@@ -734,13 +742,17 @@ dependencies = [
  "clap",
  "cookie_store 0.15.0",
  "digest 0.9.0",
+ "divrem",
  "ed25519-dalek",
  "emver",
+ "fd-lock-rs",
  "futures",
  "git-version",
+ "hex",
  "http",
  "hyper-ws-listener",
  "indexmap",
+ "isocountry",
  "itertools 0.10.1",
  "jsonpath_lib",
  "lazy_static",
@@ -752,6 +764,8 @@ dependencies = [
  "patch-db",
  "pin-project",
  "prettytable-rs",
+ "proptest",
+ "proptest-derive",
  "rand 0.7.3",
  "regex",
  "reqwest",
@@ -1301,6 +1315,16 @@ version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68f2d64f2edebec4ce84ad108148e67e1064789bee435edc5b60ad398714a3a9"
 
+[[package]]
+name = "isocountry"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ea1dc4bf0fb4904ba83ffdb98af3d9c325274e92e6e295e4151e86c96363e04"
+dependencies = [
+ "serde",
+ "thiserror",
+]
+
 [[package]]
 name = "itertools"
 version = "0.8.2"
@@ -1910,6 +1934,37 @@ dependencies = [
  "unicode-xid 0.2.2",
 ]
 
+[[package]]
+name = "proptest"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e0d9cc07f18492d879586c92b485def06bc850da3118075cd45d50e9c95b0e5"
+dependencies = [
+ "bit-set",
+ "bitflags",
+ "byteorder",
+ "lazy_static",
+ "num-traits",
+ "quick-error 2.0.1",
+ "rand 0.8.4",
+ "rand_chacha 0.3.1",
+ "rand_xorshift",
+ "regex-syntax",
+ "rusty-fork",
+ "tempfile",
+]
+
+[[package]]
+name = "proptest-derive"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90b46295382dc76166cb7cf2bb4a97952464e4b7ed5a43e6cd34e1fec3349ddc"
+dependencies = [
+ "proc-macro2 0.4.30",
+ "quote 0.6.13",
+ "syn 0.15.44",
+]
+
 [[package]]
 name = "psl-types"
 version = "2.0.7"
@@ -1938,6 +1993,18 @@ dependencies = [
  "psl-types",
 ]
 
+[[package]]
+name = "quick-error"
+version = "1.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
+
+[[package]]
+name = "quick-error"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
+
 [[package]]
 name = "quote"
 version = "0.6.13"
@@ -2051,6 +2118,15 @@ dependencies = [
  "rand_core 0.6.3",
 ]
 
+[[package]]
+name = "rand_xorshift"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d25bf25ec5ae4a3f1b92f929810509a2f53d7dca2f50b794ff57e3face536c8f"
+dependencies = [
+ "rand_core 0.6.3",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.1.57"
@@ -2272,6 +2348,18 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61b3909d758bb75c79f23d4736fac9433868679d3ad2ea7a61e3c25cfda9a088"
 
+[[package]]
+name = "rusty-fork"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb3dcc6e454c328bb824492db107ab7c0ae8fcffe4ad210136ef014458c1bc4f"
+dependencies = [
+ "fnv",
+ "quick-error 1.2.3",
+ "tempfile",
+ "wait-timeout",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.5"
@@ -3318,6 +3406,15 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
 
+[[package]]
+name = "wait-timeout"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "want"
 version = "0.3.0"