[COMMON] Fix condition equality bashisms

pointed out by checkbashisms.

$ mycmd=$(tox -e checkbashisms | grep "(should be 'b = a')" | sed -e
  "s@^[^.]*\(.[^ ]*\) line \([0-9]*\) .*@sed -i -e '\2s/==/=/g' \1;@")

$ eval $mycmd

Issue-ID: OOM-2643
Signed-off-by: Guillaume Lambert <guillaume.lambert@orange.com>
Change-Id: I9032130bc4717e111de11a73187c2f1052376e45
diff --git a/kubernetes/robot/ete-k8s.sh b/kubernetes/robot/ete-k8s.sh
index 576b669..97f4e4d 100755
--- a/kubernetes/robot/ete-k8s.sh
+++ b/kubernetes/robot/ete-k8s.sh
@@ -18,7 +18,7 @@
 # Run the testsuite for the passed tag. Valid tags are listed in usage help
 # Please clean up logs when you are done...
 #
-if [ "$1" == "" ] || [ "$2" == "" ]; then
+if [ "$1" = "" ] || [ "$2" = "" ]; then
    echo "Usage: ete-k8s.sh [namespace] [tag] [execscript]"
    echo ""
    echo "  List of test case tags (filename for intent: tag)"
@@ -76,7 +76,7 @@
 
 ETEHOME=/var/opt/ONAP
 
-if [[ "${!#}" == "execscript" ]]; then
+if [[ "${!#}" = "execscript" ]]; then
    for script in $(ls -1 "$DIR/$SCRIPTDIR"); do
       [ -f "$DIR/$SCRIPTDIR/$script" ] && [ -x "$DIR/$SCRIPTDIR/$script" ] && source "$DIR/$SCRIPTDIR/$script"
    done