Modifies MON to create database if using mysql URI

Removes default value of config in VimCredentials as MySQL does not support
it.
Adds pymysql as dependency.

Change-Id: Idb60029e027f8abad7de4617c12bde20aa66deab
Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
diff --git a/docker/Dockerfile b/docker/Dockerfile
index dca983c..5271205 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -25,7 +25,7 @@
 LABEL authors="Benjamín Díaz"
 
 RUN apt-get --yes update \
- && apt-get --yes install git python3 python3-pip libmysqlclient-dev libssl-dev libffi-dev \
+ && apt-get --yes install git python3 python3-pip libmysqlclient-dev libssl-dev libffi-dev mysql-client \
  && pip3 install pip==9.0.3
 
 COPY requirements.txt /mon/requirements.txt
@@ -60,4 +60,4 @@
 HEALTHCHECK --interval=5s --timeout=2s --retries=12 \
   CMD osm-mon-healthcheck || exit 1
 
-CMD /bin/bash mon/docker/scripts/runInstall.sh
+CMD /bin/bash mon/docker/scripts/start.sh