ci: format all YAML with `yq`

`yq` is the YAML query tool, used for manipulating YAML files. This
change uses the following command to read in and to pretty-print every
YAML file in this repository:

    for x in $(find . -name '*.yaml'); do
        yq -i -P -oy $x
    done

This makes it a bit easier to automate synchronisation between staging
and upstream, as yq always pretty-prints the entire document when
manipulating files.

Signed-off-by: Chris Kay <chris.kay@arm.com>
Change-Id: If973766fa26500d5320612422d1b4999b23439d3
diff --git a/tf-a-cleanup-tfa-next.yaml b/tf-a-cleanup-tfa-next.yaml
index a840af4..f0db5ce 100644
--- a/tf-a-cleanup-tfa-next.yaml
+++ b/tf-a-cleanup-tfa-next.yaml
@@ -7,39 +7,39 @@
     project-type: freestyle
     sandbox: true
     properties:
-    - build-discarder:
-        days-to-keep: 90
-        num-to-keep: 15
+      - build-discarder:
+          days-to-keep: 90
+          num-to-keep: 15
     triggers:
-    - timed: "0 11 * * 5" # Triggered every Friday at 11 am (GMT)
+      - timed: 0 11 * * 5 # Triggered every Friday at 11 am (GMT)
     builders:
-        - shell: |
-            #!/bin/bash
-            set -ex
-            if ! type aws
-            then
-                sudo apt-get -y -qq update
-                sudo apt-get -y -qq install --no-install-recommends unzip
-                curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
-                unzip -q awscliv2.zip
-                sudo ./aws/install
-            fi
+      - shell: |
+          #!/bin/bash
+          set -ex
+          if ! type aws
+          then
+              sudo apt-get -y -qq update
+              sudo apt-get -y -qq install --no-install-recommends unzip
+              curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
+              unzip -q awscliv2.zip
+              sudo ./aws/install
+          fi
 
-            # All tfa-next related files should be under "artifacts" on the S3 bucket.
-            ROOT=s3://${TUXPUB_S3_BUCKET}/
-            for OBJECT in $(aws s3 ls $ROOT --recursive | grep artifacts | awk '{print $4}');
-            do
-                echo "Current object: ${ROOT}${OBJECT}"
-                # Expected URL format: tf-a/next/artifacts/YYYY-MM-DD-HHMMSS/<bin_mode>/<file_name>
-                # Take the YYYY-MM-DD information from the URL for each object
-                dir_date=$(echo $OBJECT | sed 's+tf-a/next/artifacts/++' | sed 's+/.*++' | grep -E "(([0-9]+-){3,}[0-9]+)" | sed -E 's/-[0-9]+$//')
-                if [ $dir_date ]; then
-                    # Calculate how old the file is (in days)
-                    diff_in_days=$(( ( $(date +%s) - $(date -d "$dir_date" +%s) ) / $((60*60*24)) ))
-                    # Remove the file if it's older than 3 days.
-                    if (( diff_in_days > 3 )); then
-                        echo "Removing object: ${ROOT}${OBJECT}"
-                        aws s3 rm ${ROOT}${OBJECT}
-                    fi
-                fi
-            done
+          # All tfa-next related files should be under "artifacts" on the S3 bucket.
+          ROOT=s3://${TUXPUB_S3_BUCKET}/
+          for OBJECT in $(aws s3 ls $ROOT --recursive | grep artifacts | awk '{print $4}');
+          do
+              echo "Current object: ${ROOT}${OBJECT}"
+              # Expected URL format: tf-a/next/artifacts/YYYY-MM-DD-HHMMSS/<bin_mode>/<file_name>
+              # Take the YYYY-MM-DD information from the URL for each object
+              dir_date=$(echo $OBJECT | sed 's+tf-a/next/artifacts/++' | sed 's+/.*++' | grep -E "(([0-9]+-){3,}[0-9]+)" | sed -E 's/-[0-9]+$//')
+              if [ $dir_date ]; then
+                  # Calculate how old the file is (in days)
+                  diff_in_days=$(( ( $(date +%s) - $(date -d "$dir_date" +%s) ) / $((60*60*24)) ))
+                  # Remove the file if it's older than 3 days.
+                  if (( diff_in_days > 3 )); then
+                      echo "Removing object: ${ROOT}${OBJECT}"
+                      aws s3 rm ${ROOT}${OBJECT}
+                  fi
+              fi
+          done