Add Solaris support in hostname module

feature_pull_request: #1804

system/hostname.py

@@ -21,7 +21,9 @@
 DOCUMENTATION = '''
 ---
 module: hostname
-author: "Hiroaki Nakamura (@hnakamur)"
+author:
+    - "Hiroaki Nakamura (@hnakamur)"
+    - "Hideki Saito (@saito-hideki)"
 version_added: "1.4"
 short_description: Manage hostname
 requirements: [ hostname ]
@@ -116,13 +118,13 @@ class GenericStrategy(object):
       - set_current_hostname(name)
       - set_permanent_hostname(name)
     """
+
     def __init__(self, module):
         self.module = module
-
-    HOSTNAME_CMD = '/bin/hostname'
+        self.hostname_cmd = self.module.get_bin_path('hostname', True)
 
     def get_current_hostname(self):
-        cmd = [self.HOSTNAME_CMD]
+        cmd = [self.hostname_cmd]
         rc, out, err = self.module.run_command(cmd)
         if rc != 0:
             self.module.fail_json(msg="Command failed rc=%d, out=%s, err=%s" %
@@ -130,7 +132,7 @@ class GenericStrategy(object):
         return out.strip()
 
     def set_current_hostname(self, name):
-        cmd = [self.HOSTNAME_CMD, name]
+        cmd = [self.hostname_cmd, name]
         rc, out, err = self.module.run_command(cmd)
         if rc != 0:
             self.module.fail_json(msg="Command failed rc=%d, out=%s, err=%s" %
@@ -369,11 +371,9 @@ class SolarisStrategy(GenericStrategy):
     execute hostname command.
     """
 
-    HOSTNAME_CMD = '/usr/bin/hostname'
-
     def set_current_hostname(self, name):
         cmd_option = '-t'
-        cmd = [self.HOSTNAME_CMD, cmd_option, name]
+        cmd = [self.hostname_cmd, cmd_option, name]
         rc, out, err = self.module.run_command(cmd)
         if rc != 0:
             self.module.fail_json(msg="Command failed rc=%d, out=%s, err=%s" %
@@ -390,7 +390,7 @@ class SolarisStrategy(GenericStrategy):
         return out.strip()
 
     def set_permanent_hostname(self, name):
-        cmd = [self.HOSTNAME_CMD, name]
+        cmd = [self.hostname_cmd, name]
         rc, out, err = self.module.run_command(cmd)
         if rc != 0:
             self.module.fail_json(msg="Command failed rc=%d, out=%s, err=%s" %