roles/git: add install dependencies task

roles/git/tasks/main.yml

 ---
+- name: install dependencies
+  yum:
+    name: ["curl-devel", "expat-devel", "gettext-devel", "openssl-devel", "zlib-devel", "perl-ExtUtils-MakeMaker"]
+    state: present
+  become: yes
+
 - name: download and unarchive git-2.4.3
   unarchive:
     src: https://www.kernel.org/pub/software/scm/git/git-2.4.3.tar.gz