Add rstcheck support

This tool checks reStructuredText syntax helping to detect non-trivial
documentation issues.

Signed-off-by: Victor Morales <v.morales@samsung.com>

.rstcheck.cfg

@@ -0,0 +1,4 @@
+[rstcheck]
+report_level=WARNING
+ignore_directives=bibliography,
+ignore_roles=cite:p,

doc/gov/chapters/chapter09.rst

@@ -154,7 +154,8 @@ Expectation #3: The Qualitative Survey
 
 At the conclusion of the Test Case iterations, the participant will be asked to complete a qualitative survey of their experience. This survey will be used to measure the feasibility, utility, and effectiveness of the RI1 specifications, installation/configuration methods and RC-1 Test case efficacy. The survey will be in an Agile User Story format. The Table below provides an example of the survey questions:
 
-![\ **Table 1:** Survey/Questionnaire example](../figures/Table 1-1.png)
+.. image:: ../figures/Table_1-1.png
+   :alt: "Table 1: Survey/Questionnaire example"
 
 **Table 1:** Survey/Questionnaire example
 

test-requirements.txt

@@ -5,3 +5,4 @@ sphinx!=1.6.6,!=1.6.7,!=2.1.0,!=3.0.0,!=3.4.2 # BSD
 doc8 # Apache-2.0
 sphinx-material
 pyspelling # MIT
+rstcheck[sphinx] # MIT

tox.ini

@@ -10,6 +10,8 @@ deps =
   -chttps://opendev.org/openstack/requirements/raw/branch/stable/xena/upper-constraints.txt
   -r{toxinidir}/test-requirements.txt
 commands =
+    bash -c "find {toxinidir} -not -path {toxinidir}/.tox/\* \
+    -name \*.rst -type f -print0 | xargs -0 rstcheck"
     sphinx-build --keep-going -W -T -b html -D language=en doc _build/html
     sphinx-build --keep-going -W -b linkcheck doc _build/html
     pyspelling -c .spellcheck.yml