ci/lava: fix heredoc-in-yaml syntax

Fixes: 02d07f3380 ("ci/lava: Add SSH job definition")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36239>

.gitlab-ci/image-tags.yml

@@ -30,7 +30,7 @@ variables:
 
   ALPINE_X86_64_BUILD_TAG: "20250722-libwayland"
   ALPINE_X86_64_LAVA_SSH_TAG: "20250423-rootfs"
-  ALPINE_X86_64_LAVA_TRIGGER_TAG: "20250717-lava"
+  ALPINE_X86_64_LAVA_TRIGGER_TAG: "20250717-heredoc"
 
   FEDORA_X86_64_BUILD_TAG: "20250722-libwayland"
 

.gitlab-ci/lava/tests/data/FASTBOOT_force_uart=False_job_definition.yaml

@@ -130,9 +130,10 @@ actions:
                     -o ConnectTimeout=60 \
                     root@$(lava-target-ip) "${@}"
             }
-          - lava_ssh_test_case 'wait_for_dut_login' << EOF
-          - while [ ! -e /dut_ready ]; do sleep 1; done;
-          - EOF
+          - |-
+            lava_ssh_test_case 'wait_for_dut_login' << EOF
+            while [ ! -e /dut_ready ]; do sleep 1; done;
+            EOF
           - |-
             lava_ssh_test_case 'artifact_download' 'bash --' << EOF
             source /dut-env-vars.sh

.gitlab-ci/lava/tests/data/UBOOT_force_uart=False_job_definition.yaml

@@ -101,9 +101,10 @@ actions:
                     -o ConnectTimeout=60 \
                     root@$(lava-target-ip) "${@}"
             }
-          - lava_ssh_test_case 'wait_for_dut_login' << EOF
-          - while [ ! -e /dut_ready ]; do sleep 1; done;
-          - EOF
+          - |-
+            lava_ssh_test_case 'wait_for_dut_login' << EOF
+            while [ ! -e /dut_ready ]; do sleep 1; done;
+            EOF
           - |-
             lava_ssh_test_case 'artifact_download' 'bash --' << EOF
             source /dut-env-vars.sh

.gitlab-ci/lava/utils/ssh_job_definition.py

@@ -160,9 +160,13 @@ def generate_docker_test(
 
     docker_commands += [
         to_yaml_block(DOCKER_COMMANDS, escape_vars=["LAVA_TARGET_IP"]),
-        "lava_ssh_test_case 'wait_for_dut_login' << EOF",
-        "while [ ! -e /dut_ready ]; do sleep 1; done;",
-        "EOF",
+        to_yaml_block(
+            (
+                "lava_ssh_test_case 'wait_for_dut_login' << EOF",
+                "while [ ! -e /dut_ready ]; do sleep 1; done;",
+                "EOF",
+            )
+        ),
         to_yaml_block(
             (
                 "lava_ssh_test_case 'artifact_download' 'bash --' << EOF",