[nautilus] CI: Use the correct pip command

[Carlos Soriano <csoriano src gnome org>]

commit 06fa0428c029d857a94a502119c50911a73c8802
Author: Carlos Soriano <csoriano1618 gmail com>
Date:   Wed Jan 3 16:35:52 2018 +0000

    CI: Use the correct pip command

 .gitlab-ci.yml | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1342d8f75..4ef62da11 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,15 +4,14 @@ stages:
  - build
 
 before_script:
-  - dnf install -y gcc meson gettext itstool redhat-rpm-config git
+  - dnf install -y gcc gettext itstool redhat-rpm-config git
                    gtk3-devel gnome-autoar-devel gnome-desktop3-devel
                    gobject-introspection-devel libselinux-devel
                    libxml2-devel tracker-devel desktop-file-utils
                    libgexiv2-devel
-  - pip install meson
+  - pip3 install meson --user
 
 build-nautilus:
   stage: build
   script:
     - meson _build .
-    - ninja -C _build install