Move explorer-client and rust codecov jobs to self-hosted runners (My…

…stenLabs#1715)

* move explorer-client and rust codecov jobs to self-hosted runners now that we have more

* force a change in explorer to trigger the build; will reverse out later

* stop node installation skip from failing build

- The node.js installer GitHub Action seems to be failing when node
  is already installed but not in the place where the action
  runner wants to cache it.

* Turned off actions/setup-node caching; upgraded action version

- We don't want the caching - it sends way too much data
  to github. Build machines are fast.

* Revert "force a change in explorer to trigger the build; will reverse out later"

This reverts commit 1982cd0.

* explorer build back to gh-hosted; remove caching

- restores building the explorer build on the
  GitHub-hosted builders.  Also puts the actions/setup-node
  from v3 back to the original v2.

- remove caching from the Rust codecov build.

Co-authored-by: Todd Fiala <[email protected]>

.github/workflows/codecov.yml

@@ -23,7 +23,7 @@ jobs:
     name: Generate code coverage
     needs: diff
     if: github.event.pull_request.draft == false && needs.diff.outputs.isRust == 'true'
-    runs-on: [self-hosted, ubuntu]
+    runs-on: [self-hosted, self-hosted-ubuntu]
     strategy:
       fail-fast: true
     steps:
@@ -33,9 +33,6 @@ jobs:
           components: llvm-tools-preview
       # Enable caching of the 'librocksdb-sys' crate by additionally caching the
       # 'librocksdb-sys' src directory which is managed by cargo
-      - uses: bmwill/rust-cache@v1 # Fork of 'Swatinem/rust-cache' which allows caching additional paths
-        with:
-          path: ~/.cargo/registry/src/**/librocksdb-sys-*
       - name: Install grcov, and cache the binary
         uses: baptiste0928/cargo-install@v1
         with: