github actions: enable integration test and build/unittest by default

Author: fruch

.github/workflows/build-push.yml

@@ -15,7 +15,7 @@ env:
 jobs:
   build_wheels:
     name: Build wheels ${{ matrix.os }} (${{ matrix.platform }})
-    if: contains(github.event.pull_request.labels.*.name, 'test-build') || github.event_name == 'push' && endsWith(github.event.ref, 'scylla')
+    if: "(!contains(github.event.pull_request.labels.*.name, 'disable-test-build')) || github.event_name == 'push' && endsWith(github.event.ref, 'scylla')"
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -121,7 +121,7 @@ jobs:
 
   build_sdist:
     name: Build source distribution
-    if: contains(github.event.pull_request.labels.*.name, 'test-build') || github.event_name == 'push' && endsWith(github.event.ref, 'scylla')
+    if: "(!contains(github.event.pull_request.labels.*.name, 'disable-test-build'))|| github.event_name == 'push' && endsWith(github.event.ref, 'scylla')"
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2

.github/workflows/integration-tests.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   tests:
     runs-on: ubuntu-20.04
-    if: contains(github.event.pull_request.labels.*.name, 'integration-tests')
+    if: "!contains(github.event.pull_request.labels.*.name, 'disable-integration-tests')"
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python 3.8