Dynamic setting of header markup

As the top level header in index.rst and get_started.rst depends on
cookiecutter.service the length of the header markups should also
depend on the length of cookiecutter.service.

Unfortunatelly I was not able to figure out how to include the macro
from a different template, so there is a copy-paste there.

Change-Id: Iff2255f10690f23de270b84c1bd0cd7de3c611a3
Signed-off-by: csatari <gergely.csatari@nokia.com>

{{cookiecutter.directory_name}}/source/get_started.rst

@@ -1,7 +1,13 @@
-=========================
-{{cookiecutter.service}} service overview
-=========================
-
+{%- macro set_header_markup(header_text_length) -%}
+{%- set servicelength = cookiecutter.service|length -%}
+{%- for _ in range(0, servicelength + header_text_length) -%}={%- endfor -%}
+{%- endmacro -%}
+{%- macro set_header(header_text) -%}
+{{ set_header_markup(header_text|length) }}
+{{cookiecutter.service}}{{header_text}}
+{{ set_header_markup(header_text|length) }}
+{%- endmacro -%}
+{{ set_header(" service overview") }}
 The {{cookiecutter.service}} service provides...
 
 The {{cookiecutter.service}} service consists of the following components:

{{cookiecutter.directory_name}}/source/index.rst

@@ -1,6 +1,13 @@
-=====================
-{{cookiecutter.service}} service
-=====================
+{%- macro set_header_markup(header_text_length) -%}
+{%- set servicelength = cookiecutter.service|length -%}
+{%- for _ in range(0, servicelength + header_text_length) -%}={%- endfor -%}
+{%- endmacro -%}
+{%- macro set_header(header_text) -%}
+{{ set_header_markup(header_text|length) }}
+{{cookiecutter.service}}{{header_text}}
+{{ set_header_markup(header_text|length) }}
+{%- endmacro -%}
+{{ set_header(" service") }}
 
 .. toctree::
    :maxdepth: 2