Post merge local testnets (#3807)

## Issue Addressed

N/A

## Proposed Changes

Modifies the local testnet scripts to start a network with genesis validators embedded into the genesis state. This allows us to start a local testnet without the need for deploying a deposit contract or depositing validators pre-genesis.

This also enables us to start a local test network at any fork we want without going through fork transitions. Also adds scripts to start multiple geth clients and peer them with each other and peer the geth clients with beacon nodes to start a post merge local testnet.

## Additional info

Adds a new lcli command `mnemonics-validators` that generates validator directories derived from a given mnemonic. 
Adds a new `derived-genesis-state` option to the `lcli new-testnet` command to generate a genesis state populated with validators derived from a mnemonic.

.github/workflows/local-testnet.yml

@@ -25,9 +25,23 @@ jobs:
         uses: arduino/setup-protoc@e52d9eb8f7b63115df1ac544a1376fdbf5a39612
         with:
             repo-token: ${{ secrets.GITHUB_TOKEN }}
-      - name: Install anvil
-        run: cargo install --git https://github.com/foundry-rs/foundry --locked anvil
-
+      - name: Install geth (ubuntu)
+        if: matrix.os == 'ubuntu-22.04'
+        run: |
+          sudo add-apt-repository -y ppa:ethereum/ethereum
+          sudo apt-get update
+          sudo apt-get install ethereum
+      - name: Install geth (mac)
+        if: matrix.os == 'macos-12'
+        run: |
+          brew tap ethereum/ethereum
+          brew install ethereum
+      - name: Install GNU sed & GNU grep
+        if: matrix.os == 'macos-12'
+        run: |
+          brew install gnu-sed grep
+          echo "$(brew --prefix)/opt/gnu-sed/libexec/gnubin" >> $GITHUB_PATH
+          echo "$(brew --prefix)/opt/grep/libexec/gnubin" >> $GITHUB_PATH
       # https://github.com/actions/cache/blob/main/examples.md#rust---cargo
       - uses: actions/cache@v3
         id: cache-cargo
@@ -44,7 +58,7 @@ jobs:
         run: make && make install-lcli
 
       - name: Start local testnet
-        run: ./start_local_testnet.sh && sleep 60
+        run: ./start_local_testnet.sh genesis.json && sleep 60
         working-directory: scripts/local_testnet
 
       - name: Print logs
@@ -60,7 +74,7 @@ jobs:
         working-directory: scripts/local_testnet
 
       - name: Start local testnet with blinded block production
-        run: ./start_local_testnet.sh -p && sleep 60
+        run: ./start_local_testnet.sh -p genesis.json && sleep 60
         working-directory: scripts/local_testnet
 
       - name: Print logs for blinded block testnet
@@ -69,4 +83,4 @@ jobs:
 
       - name: Stop local testnet with blinded block production
         run: ./stop_local_testnet.sh
-        working-directory: scripts/local_testnet
+        working-directory: scripts/local_testnet

.github/workflows/test-suite.yml

@@ -228,8 +228,6 @@ jobs:
       uses: arduino/setup-protoc@e52d9eb8f7b63115df1ac544a1376fdbf5a39612
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-    - name: Install anvil
-      run: cargo install --git https://github.com/foundry-rs/foundry --locked anvil
     - name: Run the beacon chain sim without an eth1 connection
       run: cargo run --release --bin simulator no-eth1-sim
   syncing-simulator-ubuntu:
@@ -260,20 +258,23 @@ jobs:
       uses: arduino/setup-protoc@e52d9eb8f7b63115df1ac544a1376fdbf5a39612
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-    - name: Install anvil
-      run: cargo install --git https://github.com/foundry-rs/foundry --locked anvil
+    - name: Install geth
+      run: |
+          sudo add-apt-repository -y ppa:ethereum/ethereum
+          sudo apt-get update
+          sudo apt-get install ethereum
     - name: Install lighthouse and lcli
       run: |
           make
           make install-lcli
-    - name: Run the doppelganger protection success test script
-      run: |
-          cd scripts/tests
-          ./doppelganger_protection.sh success
     - name: Run the doppelganger protection failure test script
       run: |
           cd scripts/tests
-          ./doppelganger_protection.sh failure
+          ./doppelganger_protection.sh failure genesis.json
+    - name: Run the doppelganger protection success test script
+      run: |
+          cd scripts/tests
+          ./doppelganger_protection.sh success genesis.json
   execution-engine-integration-ubuntu:
     name: execution-engine-integration-ubuntu
     runs-on: ubuntu-latest