ci: testbed,cdrouter: improve error visibility with colored logging

Currently it's not easy to identify errors in CI job log output, so
let's introduce centralized logging helpers with colored output and
visual indicators to make errors more prominent.

The helpers are consolidated in .gitlab/scripts/helpers.sh and replace
inline logging in dut-init scripts. Error messages in cdrouter.yml and
testbed.yml now use log_error() for hopefully better visibility in CI
logs.

References: PCF-2157
Signed-off-by: Petr Štetiar <petr.stetiar@prplfoundation.org>
(cherry picked from commit a4ff6b0ccf)

.gitlab/cdrouter.yml

@@ -146,12 +146,12 @@
 
     - >
       if test -n "$cdrouter_exit_code"; then
-        echo "CDRouter exited with $cdrouter_exit_code exit code."
+        log_error "CDRouter exited with $cdrouter_exit_code exit code."
         exit "$cdrouter_exit_code"
       fi
 
       if test -n "$cram_exit_code"; then
-        echo "cram exited with $cram_exit_code exit code."
+        log_error "cram exited with $cram_exit_code exit code."
         exit "$cram_exit_code"
       fi
 

.gitlab/scripts/dut-init/cdrouter-dut-configure-wireless.sh

@@ -1,15 +1,13 @@
 #!/bin/bash
 
+source .gitlab/scripts/helpers.sh
+
 set -eu         # exit on error and undefined variables
 set -o pipefail # catch errors in pipes
 
 radio_2g_path=""
 ssid_2g_path=""
 
-log_error() { echo -e "\e[91m❌ ERROR: $*\e[0m"; }
-log_success() { echo -e "\e[92m✅ $*\e[0m"; }
-log_info() { echo -e "\e[93m💡 $*\e[0m"; }
-
 trap 'handle_error $? $LINENO $BASH_LINENO "$BASH_COMMAND" $(printf "::%s" ${FUNCNAME[@]:-})' ERR
 
 handle_error() {

.gitlab/scripts/helpers.sh

@@ -1,5 +1,9 @@
 #!/bin/bash
 
+log_error() { echo -e "\e[91m❌ ERROR: $*\e[0m"; }
+log_success() { echo -e "\e[92m✅ $*\e[0m"; }
+log_info() { echo -e "\e[93m💡 $*\e[0m"; }
+
 # section_start - Start a collapsible section in GitLab CI job logs
 #
 # Creates a collapsible section marker in GitLab CI logs that can be expanded

.gitlab/testbed.yml

@@ -107,7 +107,7 @@
           local statuses=("${PIPESTATUS[@]}")
           for status in "${statuses[@]}"; do
             if [ "$status" -ne 0 ]; then
-              echo "run_check: $* | FAILED! (status: $status)" >> .run_check_failed
+              log_error "run_check: $* | FAILED! (status: $status)" | tee -a .run_check_failed
             fi
           done
         }