[COMMON] Fix shell scripts missing shebangs

pointed out by checkbashisms.

$ tox -e checkbashisms |grep 'interpreter line' | cut -d' ' -f2
  |xargs grep -lv '#!/bin/sh' | xargs sed -i -e '1i#!/bin/sh' -e '1i\\'

plus manual fixes

Issue-ID: OOM-2643
Signed-off-by: Guillaume Lambert <guillaume.lambert@orange.com>
Change-Id: Ic41fec6ebadd162cecf889f2b119ac82551bd21d
diff --git a/kubernetes/common/certInitializer/resources/retrieval_check.sh b/kubernetes/common/certInitializer/resources/retrieval_check.sh
index f3af14b..25e4769 100644
--- a/kubernetes/common/certInitializer/resources/retrieval_check.sh
+++ b/kubernetes/common/certInitializer/resources/retrieval_check.sh
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 {{/*
 # Copyright © 2021 Orange
 #
@@ -13,8 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 */}}
-#!/bin/sh
-
 echo "*** retrieving passwords for certificates"
 export $(/opt/app/aaf_config/bin/agent.sh local showpass \
   {{.Values.fqi}} {{ .Values.fqdn }} | grep '^c' | xargs -0)