Replace git.openstack.org URLs with opendev.org URLs

1. Replace git.openstack.org URLs with opendev.org URLs
2. Remove some unnecessary spaces
3. Remove unncessary "=="

Change-Id: I005e3b2027d52dcff524ec0b0a5416f6663a0aa1

README.rst

@@ -9,7 +9,7 @@ Also ensures yum-plugin-priorities is installed since the RDO Trunk repos
 require that to work sanely.
 
 .. note:: The tool will remove any delorean* repos at the target location
-          to avoid conflicts with older repos.  This means you must specify
+          to avoid conflicts with older repos. This means you must specify
           all of the repos you want to enable in one tripleo-repos call.
 
 Examples
@@ -22,7 +22,7 @@ Install current-tripleo RDO Trunk repo and the deps repo::
 
     tripleo-repos current-tripleo
 
-Install the current-tripleo-dev repo.  This will also pull current and deps,
+Install the current-tripleo-dev repo. This will also pull current and deps,
 and will adjust the priorities of each repo appropriately::
 
     tripleo-repos current-tripleo-dev
@@ -35,7 +35,7 @@ Write repos to a different path::
 
     tripleo-repos -o ~/test-repos current
 
-Install the current-tripleo, deps, and ceph repos.  NOTE: The Ceph repo is
+Install the current-tripleo, deps, and ceph repos. NOTE: The Ceph repo is
 installed from a package and thus does not respect -o::
 
     tripleo-repos current-tripleo ceph

doc/source/index.rst

@@ -4,7 +4,7 @@
    contain the root `toctree` directive.
 
 Welcome to tripleo-repos's documentation!
-========================================================
+=========================================
 
 Contents:
 

doc/source/usage.rst

@@ -1,3 +1,3 @@
-========
+=====
 Usage
-========
+=====

tox.ini

@@ -5,7 +5,7 @@ envlist = py35,py27,pep8
 
 [testenv]
 usedevelop = True
-install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt} {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/test-requirements.txt
        -r{toxinidir}/requirements.txt