refactor function defs to be posix-like. remove usage of force positional argument in tests. support --force like arguments in client"

plugins/checks/check-deploy

@@ -40,7 +40,7 @@ if [[ ! -f "$FILENAME" ]] ; then
     echo "       CHECKS file found in container"
     FILENAME=${TMPDIR}/CHECKS
 
-    function cleanup() {
+    cleanup() {
       echo "       removing CHECKS file copied from container"
       rm -rf $TMPDIR
     }

plugins/common/functions

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 
-function has_tty() {
+has_tty() {
   if [[ "$(/usr/bin/tty || true)" == "not a tty" ]]; then
     return 1
   else
@@ -9,15 +9,15 @@ function has_tty() {
   fi
 }
 
-function dokku_log_info1() {
+dokku_log_info1() {
   echo "-----> $@"
 }
 
-function dokku_log_info2() {
+dokku_log_info2() {
   echo "=====> $@"
 }
 
-function dokku_log_info1_quiet() {
+dokku_log_info1_quiet() {
   if [[ -z "$DOKKU_QUIET_OUTPUT" ]];then
     echo "-----> $@"
   else
@@ -25,7 +25,7 @@ function dokku_log_info1_quiet() {
   fi
 }
 
-function dokku_log_info2_quiet() {
+dokku_log_info2_quiet() {
   if [[ -z "$DOKKU_QUIET_OUTPUT" ]];then
     echo "=====> $@"
   else
@@ -33,26 +33,26 @@ function dokku_log_info2_quiet() {
   fi
 }
 
-function dokku_log_verbose() {
+dokku_log_verbose() {
   echo "       $@"
 }
 
-function dokku_log_warn() {
+dokku_log_warn() {
   echo " !    $@"
 }
 
-function dokku_log_fail() {
+dokku_log_fail() {
   echo "$@" 1>&2
   exit 1
 }
 
-function verify_app_name() {
+verify_app_name() {
   local APP="$1"
   [[ ! -d "$DOKKU_ROOT/$APP" ]] && dokku_log_fail "App $APP does not exist"
   return 0
 }
 
-function parse_args() {
+parse_args() {
   for arg in "$@"; do
     case "$arg" in
       --quiet|-q)