Update deploy.sh to use the right ENV vars

deploy.sh was using ENV vars to set the image versions
incorrectly. This causes the images to be pushed using
versions already in the Makefile, rather than the overrides
in the deploy script.

This is now fixed by updating the right ENV variables.

Signed-off-by: ShyamsundarR <srangana@redhat.com>

deploy.sh

@@ -25,11 +25,11 @@ push_helm_charts() {
 }
 
 if [ "${TRAVIS_BRANCH}" == 'csi-v0.3' ]; then
-	export RBD_IMAGE_VERSION='v0.3-canary'
-	export CEPHFS_IMAGE_VERSION='v0.3-canary'
+	export ENV_RBD_IMAGE_VERSION='v0.3-canary'
+	export ENV_CEPHFS_IMAGE_VERSION='v0.3-canary'
 elif [ "${TRAVIS_BRANCH}" == 'master' ]; then
-	export RBD_IMAGE_VERSION='canary'
-	export CEPHFS_IMAGE_VERSION='canary'
+	export ENV_RBD_IMAGE_VERSION='canary'
+	export ENV_CEPHFS_IMAGE_VERSION='canary'
 else
 	echo "!!! Branch ${TRAVIS_BRANCH} is not a deployable branch; exiting"
 	exit 0 # Exiting 0 so that this isn't marked as failing