qa-tests: split integration tests on Erigon v2 and v3 (#2371)

Author: mriccobene

.github/workflows/rpc-integration-tests.yml

@@ -11,7 +11,10 @@ on:
 
 jobs:
   integration-test-suite:
-    runs-on: self-hosted
+    strategy:
+      matrix:
+        backend: [ Erigon2 ]
+    runs-on: [ self-hosted, "${{ matrix.backend }}" ]
     env:
       ERIGON_DATA_DIR: /opt/erigon-versions/reference-version/datadir
       RPC_PAST_TEST_DIR: /opt/rpc-past-tests

.github/workflows/rpc-performance-tests.yml

@@ -7,7 +7,10 @@ on:
 
 jobs:
   performance-test-suite:
-    runs-on: self-hosted
+    strategy:
+      matrix:
+        backend: [ Erigon2 ]
+    runs-on: [ self-hosted, "${{ matrix.backend }}" ]
     env:
       ERIGON_DIR: /opt/erigon-versions/reference-version
       ERIGON_DATA_DIR: /opt/erigon-versions/reference-version/datadir