ci: coverity.yml: use env variables for clean and build commands

let's use BRIDGE_COVERITY_CLEAN_COMMAND and BRIDGE_COVERITY_BUILD_COMMAND as clean and build commands
instead of defining them seperately in a yml file.

Closes: PCF-2037
References: PCF-1795

Signed-off-by: Mouna Aloui <mouna.aloui@softathome.com>

.gitlab/coverity.yml

@@ -16,6 +16,7 @@ include:
     BRIDGE_COVERITY_CONNECT_USER_PASSWORD: $COVERITY_PASSPHRASE
     BRIDGE_GITLAB_USER_TOKEN: $GITLAB_API_KEY_EXTERNAL
     BRIDGE_COVERITY_LOCAL: true
+    BRIDGE_COVERITY_CLEAN_COMMAND: make clean
     # INCLUDE_DIAGNOSTICS: 'true'
   rules:
     - if: ($CI_COMMIT_REF_NAME =~ $SCAN_BRANCHES && $CI_PIPELINE_SOURCE != 'merge_request_event')
@@ -23,6 +24,7 @@ include:
         BRIDGE_COVERITY_CONNECT_POLICY_VIEW: Outstanding Issues
     - if: ($CI_MERGE_REQUEST_TARGET_BRANCH_NAME =~ $SCAN_BRANCHES && $CI_PIPELINE_SOURCE == 'merge_request_event')
   before_script:
+    - export BRIDGE_COVERITY_BUILD_COMMAND="make -j $(nproc)"
     - apt-get -qq update && apt-get install -y curl file unzip
     - touch .build_failed
     - mkdir -p logs

coverity.yml

@@ -1,4 +0,0 @@
-capture:
-  build:
-  clean-command: make clean
-  build-command: make -j16