fix: change commands order to fix installation of html5validator and rflint.

It seems like old version of ansible pulled some old dependency that
affects pip:

File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 46, in <module>
  import OpenSSL.SSL
File "/usr/lib/python2.7/dist-packages/OpenSSL/__init__.py", line 8, in <module>
  from OpenSSL import rand, crypto, SSL
File "/usr/lib/python2.7/dist-packages/OpenSSL/SSL.py", line 118, in <module>
  SSL_ST_INIT = _lib.SSL_ST_INIT
AttributeError: 'module' object has no attribute 'SSL_ST_INIT'

When we install html5validator/rflint first we don't have that issue
because one of them pulled a newer version of a dependency that is
needed by pip.

Fix #1020

Author: php-coder

.travis.yml

@@ -14,12 +14,12 @@ before_script:
       mysql -u root -e 'CREATE DATABASE mystamps CHARACTER SET utf8;';
       mkdir -p /tmp/uploads /tmp/preview;
       cp src/main/resources/test/test.png /tmp/uploads/1.png;
-      if [ "$TRAVIS_BRANCH" = 'prod' -a "$TRAVIS_PULL_REQUEST" = 'false' ]; then
-        pip install --user ansible==2.1.1.0;
-      fi;
       npm install -g bootlint;
       pip install --user html5validator;
       pip install --user robotframework-lint;
+      if [ "$TRAVIS_BRANCH" = 'prod' -a "$TRAVIS_PULL_REQUEST" = 'false' ]; then
+        pip install --user ansible==2.1.1.0;
+      fi;
       if [ "$TRAVIS_PULL_REQUEST" != 'false' ]; then
         gem install danger nokogiri --no-ri --no-rdoc;
       fi;