roles: improve ability to check for un/installed packages

The `rpm_ostree_install*` and `rpm_ostree_uninstall*` roles had some
limitations when first created.  Namely, only being able to be used
once per playbook and being unable to check for a binary that did not
match the package name.

This changes the roles to use the `allow_duplicates` boolean, so that
they may be used multiple times in the same playbook.  The `*verify`
roles have also been changed to allow for checking for a different
binary name than what is used by the package.  For example, the `ntp`
package installs an `ntpd` binary, whereas the `httpd` package installs
an `httpd` binary.

roles/rpm_ostree_install/meta/main.yml

@@ -0,0 +1,2 @@
+---
+allow_duplicates: true

roles/rpm_ostree_install_verify/meta/main.yml

@@ -0,0 +1,2 @@
+---
+allow_duplicates: true

roles/rpm_ostree_install_verify/tasks/main.yml

@@ -8,10 +8,9 @@
 #
 # Parameter:
 #   package - name of a single package
+#   binary - name of binary to check for (optional)
 #
 # Requirements:
-#  Package must install a binary that is the same as the package name
-#    i.e. rpm-ostree install wget installs a binary named wget
 #  This role must be run after the reboot following rpm-ostree install of a package
 #
 
@@ -20,6 +19,12 @@
     msg: "No packages specified"
   when: package is undefined
 
+# The 'binary' fact can be set to something other than the package name
+# if needed
+- name: Setup binary fact
+  set_fact:
+    bin: "{{ binary if binary is defined else package }}"
+
 - name: Get rpm-ostree status --json output
   command: rpm-ostree status --json
   register: installed
@@ -43,8 +48,8 @@
     msg: "{{ package }} not in rpm-ostree status output"
   when: "'{{ package }}' not in installed_pkgs"
 
-- name: Check for {{ package }} binary
-  command: command -v {{ package }}
+- name: Check for {{ bin }} binary
+  command: command -v {{ bin }}
 
 - name: Check {{ package }} in rpmdb
   command: rpm -q {{ package }}

roles/rpm_ostree_uninstall/meta/main.yml

@@ -0,0 +1,2 @@
+---
+allow_duplicates: true

roles/rpm_ostree_uninstall_verify/meta/main.yml

@@ -0,0 +1,2 @@
+---
+allow_duplicates: true

roles/rpm_ostree_uninstall_verify/tasks/main.yml

@@ -8,10 +8,9 @@
 #
 # Parameter:
 #   package - the name of a single package
+#   binary - the name of a binary (optional)
 #
 # Requirements:
-#  Package must install a binary that is the same as the package name
-#    i.e. rpm-ostree uninstall wget installs a binary named wget
 #  This role must be run after the reboot following rpm-ostree install of a package
 #
 
@@ -20,6 +19,12 @@
     msg: "No packages specified"
   when: package is undefined
 
+# The 'binary' fact can be set to something other than the package name
+# if needed
+- name: Setup binary fact
+  set_fact:
+    bin: "{{ binary if binary is defined else package }}"
+
 - name: Get rpm-ostree status --json output
   command: rpm-ostree status --json
   register: installed
@@ -51,8 +56,8 @@
     msg: "{{ package }} in rpm-ostree status output"
   when: "'{{ package }}' in installed_pkgs"
 
-- name: Fail if binary for {{ package }} is installed
-  command: command -v {{ package }}
+- name: Fail if binary for {{ bin }} is installed
+  command: command -v {{ bin }}
   register: binary
   failed_when: binary.rc != 1