Adding a Collins inventory script for Ansible

plugins/inventory/collins.ini

+# Ansible Collins external inventory script settings
+#
+
+[collins]
+
+host = http://localhost:9000
+
+username = blake
+password = admin:first
+
+# Specifies a timeout for all HTTP requests to Collins.
+timeout_secs = 120
+
+# Specifies a maximum number of retries per Collins request.
+max_retries = 5
+
+# Specifies the number of results to return per paginated query as specified in
+# the Pagination section of the Collins API docs:
+# http://tumblr.github.io/collins/api.html
+results_per_query = 100
+
+# Specifies the Collins asset type which will be queried for; most typically
+# you'll want to leave this at the default of SERVER_NODE.
+asset_type = SERVER_NODE
+
+# Collins assets can optionally be assigned hostnames; this option will preference
+# the selection of an asset's hostname over an IP address as the primary identifier
+# in the Ansible inventory.  Typically, this value should be set to true if assets
+# are assigned hostnames.
+prefer_hostnames = true
+
+# Within Collins, assets can be granted multiple IP addresses; this configuration
+# value specifies the index within the 'ADDRESSES' array as returned by the
+# following API endpoint:
+# http://tumblr.github.io/collins/api.html#api-ipam-asset-addresses-section
+ip_address_index = 0
+
+# Sets whether Collins instances in multiple datacenters will be queried.
+query_remote_dcs = false
+
+# API calls to Collins can involve large, substantial queries. For this reason,
+# we cache the results of an API call. Set this to the path you want cache files
+# to be written to. Two files will be written to this directory:
+#   - ansible-collins.cache
+#   - ansible-collins.index
+cache_path = /tmp
+
+# If errors occur while querying inventory, logging messages will be written
+# to a logfile in the specified directory:
+#   - ansible-collins.log
+log_path = /tmp
+
+# The number of seconds that a cache file is considered valid. After this many
+# seconds, a new API call will be made, and the cache file will be updated.
+cache_max_age = 600