cdpd-patcher: fallback to base_version if it's different

src/main/scripts/cdpd-patcher

@@ -31,6 +31,7 @@ case "$VERSION" in
     echo "@@@ lookup stackversion for releasline $VERSION"
     wget -nv -O $tmp "http://release.infra.cloudera.com/hwre-api/getreleaseversion?stack=CDH&releaseline=$VERSION"
     VERSION="`cat $tmp|jq -r .version`"
+    BASE_VERSION="`cat $tmp|jq -r '."base-version"'`"
     ;;
   FENG)
     VERSION=7.0.2.1
@@ -41,7 +42,16 @@ case "$VERSION" in
 esac
 
 VERSION="${VERSION//CDH-/}"
+BASE_VERSION="${BASE_VERSION%%-*}" # e.g. 7.2.11.0-123 ==> 7.2.11.0
+
 echo "@@@ version: $VERSION"
+echo "@@@ base_version: $BASE_VERSION"
+
+# if versions are different and BASE_VERSION is not empty (wasn't null in JSON)
+if [ ! "$VERSION" = "$BASE_VERSION" -a -n "$BASE_VERSION" ]; then
+    echo "VERSION and BASE_VERSION are not equal, falling back to BASE_VERSION: $BASE_VERSION"
+    VERSION=$BASE_VERSION
+fi
 
 wget -nv -O $tmp "http://release.infra.cloudera.com/hwre-api/latestcompiledbuild?stack=CDH&release=${VERSION}&os=centos7"
 build="`cat $tmp|jq -r .build`"