test: optimize codecov config (#13329)

* test: optimize codecov config to let GitHub checks always pass

* Run tests on workflow changes, too

.github/workflows/bashlib.sh

@@ -191,11 +191,6 @@ cypress-run-all() {
 
   cypress-run "*/**/*"
 
-  # Upload code coverage separately so each page can have separate flags
-  # -c will clean existing coverage reports, -F means add flags
-  # || true to prevent CI failure on codecov upload
-  codecov -cF "cypress" || true
-
   # After job is done, print out Flask log for debugging
   say "::group::Flask log for default run"
   cat "$flasklog"
@@ -211,8 +206,10 @@ cypress-run-all() {
 
   cypress-run "sqllab/*" "Backend persist"
 
+  # Upload code coverage separately so each page can have separate flags
+  # -c will clean existing coverage reports, -F means add flags
   # || true to prevent CI failure on codecov upload
-  codecov -cF "cypress" || true
+  codecov -c -F "cypress" || true
 
   say "::group::Flask log for backend persist"
   cat "$flasklog"

.github/workflows/superset-frontend.yml

@@ -45,4 +45,4 @@ jobs:
         if: steps.check.outcome == 'failure'
         working-directory: ./superset-frontend
         run: |
-          bash <(curl -s https://codecov.io/bash) -cF javascript
+          bash <(curl -s https://codecov.io/bash) -c -F javascript

.github/workflows/superset-python-presto-hive.yml

@@ -82,7 +82,7 @@ jobs:
       - name: Upload code coverage
         if: steps.check.outcome == 'failure'
         run: |
-          bash <(curl -s https://codecov.io/bash) -cF python
+          bash <(curl -s https://codecov.io/bash) -c -F python -F presto
 
   test-postgres-hive:
     if: github.event.pull_request.draft == false
@@ -158,4 +158,4 @@ jobs:
       - name: Upload code coverage
         if: steps.check.outcome == 'failure'
         run: |
-          bash <(curl -s https://codecov.io/bash) -cF python
+          bash <(curl -s https://codecov.io/bash) -c -F python -F hive

.github/workflows/superset-python-unittest.yml

@@ -70,7 +70,7 @@ jobs:
       - name: Upload code coverage
         if: steps.check.outcome == 'failure'
         run: |
-          bash <(curl -s https://codecov.io/bash) -cF python
+          bash <(curl -s https://codecov.io/bash) -c -F python -F mysql
 
   test-postgres:
     if: github.event.pull_request.draft == false
@@ -134,7 +134,7 @@ jobs:
       - name: Upload code coverage
         if: steps.check.outcome == 'failure'
         run: |
-          bash <(curl -s https://codecov.io/bash) -cF python
+          bash <(curl -s https://codecov.io/bash) -c -F python -F postgres
 
   test-sqlite:
     if: github.event.pull_request.draft == false
@@ -190,4 +190,4 @@ jobs:
       - name: Upload code coverage
         if: steps.check.outcome == 'failure'
         run: |
-          bash <(curl -s https://codecov.io/bash) -cF python
+          bash <(curl -s https://codecov.io/bash) -c -F python -F sqlite