Added helm3 installation to LCM docker

Change-Id: Ifd538622dbc35bc227f0da06cfab5a58f480e179
Signed-off-by: lloretgalleg <illoret@indra.es>
diff --git a/docker/LCM/Dockerfile b/docker/LCM/Dockerfile
index 6187e8b..20ac54b 100644
--- a/docker/LCM/Dockerfile
+++ b/docker/LCM/Dockerfile
@@ -63,6 +63,11 @@
     && mv linux-amd64/helm /usr/local/bin/helm \
     && rm -r linux-amd64/
 
+RUN curl https://get.helm.sh/helm-v3.3.4-linux-amd64.tar.gz --output helm-v3.3.4.tar.gz \
+    && tar -zxvf helm-v3.3.4.tar.gz \
+    && mv linux-amd64/helm /usr/local/bin/helm3 \
+    && rm -r linux-amd64/
+
 RUN curl -L https://launchpad.net/juju/2.7/2.7.6/+download/juju-2.7.6-k8s.tar.xz --output juju-2.7.6-k8s.tar.xz \
     && tar -xvf juju-2.7.6-k8s.tar.xz \
     && mv juju /usr/local/bin/juju