sast-snyk-check: added fix for generating stats with ignore files

Resolves: https://issues.redhat.com/browse/OSH-795

The jq command returned null when the scan ignored files and there were findings. That null value is now converted into 0

Author: jperezdealgaba

task/sast-snyk-check-oci-ta/0.3/sast-snyk-check-oci-ta.yaml

@@ -233,8 +233,8 @@ spec:
 
           # Generation of scan stats
 
-          total_files=$(jq '[.runs[0].properties.coverage[].files] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
-          supported_files=$(jq '[.runs[0].properties.coverage[] | select(.type == "SUPPORTED") | .files] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
+          total_files=$(jq '[.runs[0].properties.coverage[].files // 0] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
+          supported_files=$(jq '[.runs[0].properties.coverage[] | select(.type == "SUPPORTED") | .files // 0] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
 
           # We make sure the values are 0 if no supported/total files are found
           total_files=${total_files:-0}

task/sast-snyk-check/0.3/sast-snyk-check.yaml

@@ -210,8 +210,8 @@ spec:
 
           # Generation of scan stats
 
-          total_files=$(jq '[.runs[0].properties.coverage[].files] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
-          supported_files=$(jq '[.runs[0].properties.coverage[] | select(.type == "SUPPORTED") | .files] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
+          total_files=$(jq '[.runs[0].properties.coverage[].files // 0] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
+          supported_files=$(jq '[.runs[0].properties.coverage[] | select(.type == "SUPPORTED") | .files // 0] | add' "${SOURCE_CODE_DIR}"/sast_snyk_check_out.json)
 
           # We make sure the values are 0 if no supported/total files are found
           total_files=${total_files:-0}