TT#37257 Add option 'ngcpcfg apply --force-all-services' to force all services restart

At the end of installer's 'configuration' section we need
to restart all services were touched during the installation
(otherwise we need to restart the node completely).

The option helps us in this case as etckeeper is
not reliable enough during the installation.

P.S. we pass options from 'apply' to 'services' now,
we should remove 'Unsupported option(s) given: $*' check,
otherwise it is failing as 'apply' requires commit message,
which cause error on 'services' level: 'Unsupported option(s) given'
> 2018-09-13 18:08:33: Error: Unsupported option(s) given: my commit message
> 2018-09-13 18:08:34: Did you mean '--dry-run'?

Change-Id: I5dac44cd87dc1fc90f81e4ac3a14af32c00f825e

scripts/apply

@@ -38,7 +38,7 @@ if check_for_outstanding_commits && [ -z "${1:-}" ] ; then
 fi
 
 "${SCRIPTS}"/build
-"${SCRIPTS}"/services
+"${SCRIPTS}"/services "$@"
 "${SCRIPTS}"/commit "$@"
 
 # We "commit" AFTER we "build", therefore the state information is out of date

scripts/services

@@ -102,7 +102,7 @@ systed_daemon_reload_preset() {
 }
 
 is_absolute_path() {
-  local dir=$1
+  local dir="$1"
 
   if [[ ! "${dir}" =~ ^/ ]] ; then
     log_error "${dir} is not an absolute path"
@@ -113,7 +113,7 @@ is_absolute_path() {
 }
 
 is_non_git_folder() {
-  local dir=$1
+  local dir="$1"
 
   if [[ ! -d "${dir}/.git" ]] ; then
     log_info "${dir} has no support of .services"
@@ -123,17 +123,61 @@ is_non_git_folder() {
   return 0
 }
 
+generate_list_to_process() {
+  local dir="$1"
+
+  if ${FORCE_ALL_SERVICES} ; then
+    log_debug "calling function find_all_services()"
+    find_all_services "${dir}"
+  else
+    log_debug "calling function find_all_changed_services()"
+    find_all_changed_services "${dir}"
+  fi
+}
+
+find_all_services() {
+  local dir="$1"
+
+  while read -r file ; do
+    if [ ! -r "${file}" ] ; then
+      log_warn "Cannot read file '${file}'"
+    fi
+    log_debug "Storing ${file} in '${TMPFILE}'"
+    echo "${file}" >> "${TMPFILE}"
+  done < <(find "${SERVICES_POOL_BASE}/${dir}" -name '*.services' | sort -u)
+}
+
+find_all_changed_services() {
+  local dir="$1"
+
+  log_debug "${FUNCNAME[0]}(): Working in ${dir}"
+  pushd "${dir}" >/dev/null
+
+  for file in $(git status --porcelain | sed 's/^...//') ; do
+    if [ -r "$file" ] && [ -r "${SERVICES_POOL_BASE}/${dir}/${file}".services ] ; then
+      log_debug "Storing ${SERVICES_POOL_BASE}/${dir}/${file}.services in '${TMPFILE}'"
+      echo "${SERVICES_POOL_BASE}/${dir}/${file}".services
+    elif [ -r "$file" ] && [ -r "${SERVICES_POOL_BASE}/${dir}/$(dirname "$file")"/ngcpcfg.services ] ; then
+      log_debug "Storing ${SERVICES_POOL_BASE}/${dir}/$(dirname "$file")/ngcpcfg.services in '${TMPFILE}'"
+      echo "${SERVICES_POOL_BASE}/${dir}/$(dirname "$file")/ngcpcfg.services"
+    fi
+  done | sort -u >> "${TMPFILE}"
+
+  popd >/dev/null
+}
+
 # main script
 
 DRYRUN='false'
+FORCE_ALL_SERVICES='false'
+
 if [[ "${1:-}" == "test" ]] || [[ "${1:-}" == "--dry-run" ]]; then
   DRYRUN='true'
-elif [[ -n "${1:-}" ]] ; then
-  log_error "Unsupported option(s) given: $*"
-  log_info  "Did you mean '--dry-run'?"
-  exit 1
+elif [[ "${1:-}" == "--force-all-services" ]] ; then
+  FORCE_ALL_SERVICES='true'
 fi
 log_debug "DRYRUN = $DRYRUN"
+log_debug "FORCE_ALL_SERVICES = $FORCE_ALL_SERVICES"
 
 log_debug "systed_daemon_reload_preset function"
 systed_daemon_reload_preset
@@ -144,17 +188,8 @@ log_debug "TMPFILE = $TMPFILE"
 for dir in ${CONFIG_POOL} ; do
   is_absolute_path "${dir}" || continue
   is_non_git_folder "${dir}" || continue
-  pushd "${dir}" >/dev/null
-  for file in $(git status --porcelain | sed 's/^...//') ; do
-    if [ -r "$file" ] && [ -r "${SERVICES_POOL_BASE}/${dir}/${file}".services ] ; then
-      log_debug "Storing ${SERVICES_POOL_BASE}/${dir}/${file}.services in '${TMPFILE}'"
-      echo "${SERVICES_POOL_BASE}/${dir}/${file}".services
-    elif [ -r "$file" ] && [ -r "${SERVICES_POOL_BASE}/${dir}/$(dirname "$file")"/ngcpcfg.services ] ; then
-      log_debug "Storing ${SERVICES_POOL_BASE}/${dir}/$(dirname "$file")/ngcpcfg.services in '${TMPFILE}'"
-      echo "${SERVICES_POOL_BASE}/${dir}/$(dirname "$file")/ngcpcfg.services"
-    fi
-  done | sort -u >> "${TMPFILE}"
-  popd >/dev/null
+
+  generate_list_to_process "${dir}"
 done
 
 if ! [ -s "$TMPFILE" ] ; then