Enable reloadable config in services

uwsgi services:
[1] By default uwsgi is set to exit on reload this breaks config reloading
    of the service [1][2]. It needs to be set to 'false'.
[2] Requires to add 'systemctl reload' command support by adding ExecReload
    in unit file.

Non uwsgi services:
[1] Non uwsgi services only requires to add ExecReload in unit file.

There was a similar patch submitted by Matthew Treinish [3] but it was
already set to workflow +1(not merged as having dependency on other patch)
and it was having some issues as specified in comment and missing reload
functionality for other services.

[1] https://etherpad.openstack.org/p/uwsgi-issues
[2] http://uwsgi-docs.readthedocs.io/en/latest/Options.html#exit-on-reload
[3] https://review.openstack.org/#/c/490904/2

Change-Id: I78f5e9d4574671c74a52af64724946feb41c2d7a

lib/apache

@@ -259,7 +259,7 @@ function write_uwsgi_config {
     iniset "$file" uwsgi master true
     # Set die-on-term & exit-on-reload so that uwsgi shuts down
     iniset "$file" uwsgi die-on-term true
-    iniset "$file" uwsgi exit-on-reload true
+    iniset "$file" uwsgi exit-on-reload false
     # Set worker-reload-mercy so that worker will not exit till the time
     # configured after graceful shutdown
     iniset "$file" uwsgi worker-reload-mercy $WORKER_TIMEOUT
@@ -316,7 +316,7 @@ function write_local_uwsgi_http_config {
     iniset "$file" uwsgi master true
     # Set die-on-term & exit-on-reload so that uwsgi shuts down
     iniset "$file" uwsgi die-on-term true
-    iniset "$file" uwsgi exit-on-reload true
+    iniset "$file" uwsgi exit-on-reload false
     iniset "$file" uwsgi enable-threads true
     iniset "$file" uwsgi plugins python
     # uwsgi recommends this to prevent thundering herd on accept.