handle unresponsive nodes (#474)

* manage gateway status label and disassociate EIP on node ready status Unknown

* update README

* update openssl and fix Dockerfile rust version

* clean up typos, remove unnecessary async, and simplify egress node cleanup

* add egress control loop for setting egress status label on unresponsive
nodes

* move egress label setting of new nodes out of controller

* update packages and adjust egress node labeling

* move to rust 1.78 and upgrade more dependencies

* use replace_status on set_status_detached

* lint fixes and bump pr workflow to rust 1.78

* address remaining clippy warnings

* adjust node controller:

* cleanup egress_ready label
* only detach don't disassociate EIP on unresponsive nodes

* refactor egress labeler

* egress improvements

* node improvements

* fix debug call

.github/workflows/pr.yml

@@ -12,28 +12,28 @@ jobs:
     - uses: actions/checkout@v2
     - uses: actions-rs/toolchain@v1
       with:
-        toolchain: 1.74.0
+        toolchain: 1.78.0
         components: rustfmt, clippy
     - uses: Swatinem/[email protected]
     - uses: actions-rs/cargo@v1
       with:
         command: fmt
-        toolchain: 1.74.0
+        toolchain: 1.78.0
         args: -- --check
     - uses: actions-rs/cargo@v1
       with:
         command: clippy
-        toolchain: 1.74.0
+        toolchain: 1.78.0
         args: -- --deny warnings
     - uses: actions-rs/cargo@v1
       with:
         command: install
-        toolchain: 1.74.0
+        toolchain: 1.78.0
         args: --locked cargo-deny
     - uses: actions-rs/cargo@v1
       with:
         command: deny
-        toolchain: 1.74.0
+        toolchain: 1.78.0
         args: check
   test:
     runs-on: ubuntu-20.04