tests: run mvdan/shfmt on test runs

While I do not agree with _every_ style change, this will force Dokku to have consistent formatting across all shell scripts, which is arguably a Good Thing™.

The command used to reprocess everything is:

```shell
shfmt -l -bn -ci -i 2 -w .
```

plugins/logs/commands

@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
 [[ " help logs:help " == *" $1 "* ]] || exit "$DOKKU_NOT_IMPLEMENTED_EXIT"
 source "$PLUGIN_AVAILABLE_PATH/logs/internal-functions"
-set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+set -eo pipefail
+[[ $DOKKU_TRACE ]] && set -x
 
 case "$1" in
   help | logs:help)

plugins/logs/internal-functions

@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
-set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+set -eo pipefail
+[[ $DOKKU_TRACE ]] && set -x
 
 fn-logs-usage() {
   declare desc="logs specific usage"
@@ -14,14 +15,14 @@ fn-logs-usage() {
 
 fn-logs-help-content() {
   declare desc="return logs plugin help content"
-  cat<<help_content
+  cat <<help_content
     logs <app> [-h] [-t] [-n num] [-q] [-p process], Display recent log output
     logs:failed <app>, Show the last logs for an application
 help_content
 }
 
 cmd-logs-help() {
-  if [[ $1 = "logs:help" ]] ; then
+  if [[ $1 == "logs:help" ]]; then
     echo -e 'Usage: dokku logs[:COMMAND]'
     echo ''
     echo 'Output app logs'
@@ -31,7 +32,7 @@ cmd-logs-help() {
   elif [[ $(ps -o command= $PPID) == *"--all"* ]]; then
     fn-logs-help-content
   else
-    cat<<help_desc
+    cat <<help_desc
     logs, Output app logs
 help_desc
   fi

plugins/logs/subcommands/default

@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
-set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+set -eo pipefail
+[[ $DOKKU_TRACE ]] && set -x
 source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
 source "$PLUGIN_AVAILABLE_PATH/logs/internal-functions"
 
@@ -7,28 +8,47 @@ logs_default_cmd() {
   declare desc="display recent log output"
   local cmd="logs"
   [[ -z $2 ]] && dokku_log_fail "Please specify an app to run the command on"
-  local APP="$2"; verify_app_name "$2"
+  local APP="$2"
+  verify_app_name "$2"
   local APP_ROOT="$DOKKU_ROOT/$APP"
   local COLORS=(36 33 32 35 31)
 
   ! (is_deployed "$APP") && dokku_log_fail "App $APP has not been deployed"
 
-  shift 2;
+  shift 2
   local TEMP=$(getopt -o htqn:p: --long help,tail,quiet,num:,ps: -n 'dokku logs' -- "$@")
   local EXIT_CODE="$?"
-  if [[ "$EXIT_CODE" != 0 ]]; then fn-logs-usage >&2 ; exit 1 ; fi
+  if [[ "$EXIT_CODE" != 0 ]]; then
+    fn-logs-usage >&2
+    exit 1
+  fi
   eval set -- "$TEMP"
 
   local DOKKU_LOGS_LINE_NUMBERS="100"
   while true; do
-      case "$1" in
-          -t|--tail) local DOKKU_LOGS_ARGS+="--follow "; shift ;;
-          -n|--num) local DOKKU_LOGS_LINE_NUMBERS="$2"; shift 2 ;;
-          -p|--ps) local DOKKU_LOGS_ONLY_PROCESS="$2"; shift 2 ;;
-          -q|--quiet) local DOKKU_LOGS_NO_PRETTY_PRINT="true"; shift ;;
-          --) shift; break ;;
-          *) dokku_log_fail "Internal error";;
-      esac
+    case "$1" in
+      -t | --tail)
+        local DOKKU_LOGS_ARGS+="--follow "
+        shift
+        ;;
+      -n | --num)
+        local DOKKU_LOGS_LINE_NUMBERS="$2"
+        shift 2
+        ;;
+      -p | --ps)
+        local DOKKU_LOGS_ONLY_PROCESS="$2"
+        shift 2
+        ;;
+      -q | --quiet)
+        local DOKKU_LOGS_NO_PRETTY_PRINT="true"
+        shift
+        ;;
+      --)
+        shift
+        break
+        ;;
+      *) dokku_log_fail "Internal error" ;;
+    esac
   done
 
   if [[ -n $DOKKU_LOGS_ONLY_PROCESS ]]; then
@@ -39,10 +59,10 @@ logs_default_cmd() {
   [[ -z $(stat -t "${CONTAINERS[0]}" 2>/dev/null) ]] && exit 0
 
   local DOKKU_LOGS_ARGS+="--tail $DOKKU_LOGS_LINE_NUMBERS"
-  ((MAX_INDEX=${#CONTAINERS[*]} - 1)) || true
+  ((MAX_INDEX = ${#CONTAINERS[*]} - 1)) || true
   for i in ${!CONTAINERS[*]}; do
     local DYNO=$(echo "${CONTAINERS[i]}" | sed -r 's/.*CONTAINER\.(.*)/\1/')
-    local CID=$(< "${CONTAINERS[i]}")
+    local CID=$(<"${CONTAINERS[i]}")
     local COLOR=${COLORS[i % ${#COLORS[*]}]}
     if [[ $DOKKU_LOGS_NO_PRETTY_PRINT == "true" ]]; then
       local DOKKU_LOGS_CMD+="(docker logs $DOKKU_LOGS_ARGS $CID 2>&1)"

plugins/logs/subcommands/failed

@@ -2,11 +2,13 @@
 source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
 source "$PLUGIN_AVAILABLE_PATH/apps/functions"
 source "$PLUGIN_AVAILABLE_PATH/config/functions"
-set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+set -eo pipefail
+[[ $DOKKU_TRACE ]] && set -x
 
 cmd-logs-failed() {
   declare desc="shows the last failed deploy logs"
-  declare cmd="logs:failed" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
+  declare cmd="logs:failed" argv=("$@")
+  [[ ${argv[0]} == "$cmd" ]] && shift 1
   declare APP="$1"
   local DOKKU_SCHEDULER