Update Backdrop CMS version to 1.5.1.

[serundeputy]

No description provided.

[yosifkit]

diff --git a/backdrop_fpm/Dockerfile b/backdrop_fpm/Dockerfile
index 27aaa3c..3db0819 100644
--- a/backdrop_fpm/Dockerfile
+++ b/backdrop_fpm/Dockerfile
@@ -10,8 +10,8 @@ RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libpq-dev \
 WORKDIR /var/www/html

 # https://github.com/backdrop/backdrop/releases
-ENV BACKDROP_VERSION 1.5.0
-ENV BACKDROP_MD5 1eed54dd43304e8bae2b77ab3d4659e1
+ENV BACKDROP_VERSION 1.5.1
+ENV BACKDROP_MD5 59481db12d492c9579807f670803fa20

 RUN curl -fSL "https://github.com/backdrop/backdrop/archive/${BACKDROP_VERSION}.tar.gz" -o backdrop.tar.gz \
    && echo "${BACKDROP_MD5} *backdrop.tar.gz" | md5sum -c - \
diff --git a/backdrop_latest/Dockerfile b/backdrop_latest/Dockerfile
index 0e93084..87161ff 100644
--- a/backdrop_latest/Dockerfile
+++ b/backdrop_latest/Dockerfile
@@ -12,8 +12,8 @@ RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libpq-dev \
 WORKDIR /var/www/html

 # https://github.com/backdrop/backdrop/releases
-ENV BACKDROP_VERSION 1.5.0
-ENV BACKDROP_MD5 1eed54dd43304e8bae2b77ab3d4659e1
+ENV BACKDROP_VERSION 1.5.1
+ENV BACKDROP_MD5 59481db12d492c9579807f670803fa20

 RUN curl -fSL "https://github.com/backdrop/backdrop/archive/${BACKDROP_VERSION}.tar.gz" -o backdrop.tar.gz \
   && echo "${BACKDROP_MD5} *backdrop.tar.gz" | md5sum -c - \

Build test of #2293; cbe8ebf (backdrop):

$ bashbrew build backdrop:1.5.1
warning: insecure protocol git:// detected: git://github.com/backdrop-ops/backdrop-docker
Building bashbrew/cache:4499c24ad4875a4e5fe20ba512372ad7bc7054683dc78ce1a63faf25f401d82a (backdrop:1.5.1)
Tagging backdrop:1.5.1
Tagging backdrop:1.5
Tagging backdrop:1
Tagging backdrop:1.5.0-apache
Tagging backdrop:1.5-apache
Tagging backdrop:1-apache
Tagging backdrop:apache
Tagging backdrop:latest

$ test/run.sh backdrop:1.5.1
testing backdrop:1.5.1
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-hard-coded-passwords' [3/4]...passed
    'override-cmd' [4/4]...passed


$ bashbrew build backdrop:1.5.1-fpm
Building bashbrew/cache:4acc1acf747014c2f210735d34427e78c69677594968b25171acf8b709e00f53 (backdrop:1.5.1-fpm)
Tagging backdrop:1.5.1-fpm
Tagging backdrop:1.5-fpm
Tagging backdrop:1-fpm
Tagging backdrop:fpm

$ test/run.sh backdrop:1.5.1-fpm
testing backdrop:1.5.1-fpm
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-hard-coded-passwords' [3/4]...passed
    'override-cmd' [4/4]...passed