Add git package to the list of dependencies

In the quickstart there is need the git package to install
kolla-ansible from the source for deployment or evaluation and
to clone repository for development.

Closes-Bug: #1999370
Change-Id: Ia623694c801c03b151944947141551ecbc1d24f5
Signed-off-by: Maksim Malchuk <maksim.malchuk@gmail.com>

doc/source/user/quickstart.rst

@@ -52,13 +52,13 @@ execution, which is described in
 
    .. code-block:: console
 
-      sudo dnf install python3-devel libffi-devel gcc openssl-devel python3-libselinux
+      sudo dnf install git python3-devel libffi-devel gcc openssl-devel python3-libselinux
 
    For Debian or Ubuntu, run:
 
    .. code-block:: console
 
-      sudo apt install python3-dev libffi-dev gcc libssl-dev
+      sudo apt install git python3-dev libffi-dev gcc libssl-dev
 
 Install dependencies using a virtual environment
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