chore: Update discovery artifacts (#1562)

## Deleted keys were detected in the following stable discovery artifacts:
androidpublisher v3 https://github.com/googleapis/google-api-python-client/commit/594b20bfc7b724ab1b19b3a8f1df9783f82b25c7
appengine v1 https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
retail v2 https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a

## Deleted keys were detected in the following pre-stable discovery artifacts:
appengine v1alpha https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
appengine v1beta https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
dns v1beta2 https://github.com/googleapis/google-api-python-client/commit/3e8173dcdf327abec4f7927cad565a4fdca7382d
retail v2alpha https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a
retail v2beta https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a

## Discovery Artifact Change Summary:
feat(analyticsadmin): update the api https://github.com/googleapis/google-api-python-client/commit/be347fe46fbee592c9a97d405655ef9a121b1d15
feat(androidpublisher): update the api https://github.com/googleapis/google-api-python-client/commit/594b20bfc7b724ab1b19b3a8f1df9783f82b25c7
feat(appengine): update the api https://github.com/googleapis/google-api-python-client/commit/59606ed1d543608549a574ac1229d20c970399de
feat(area120tables): update the api https://github.com/googleapis/google-api-python-client/commit/f35db63f3e1146ee870334abfd317f168f098600
feat(chromepolicy): update the api https://github.com/googleapis/google-api-python-client/commit/ecaafc4d06c170ac5e1cab7127884a4ea0f17a4c
feat(cloudbuild): update the api https://github.com/googleapis/google-api-python-client/commit/7f6e2e7afba57f065155dc329fd6b7fc1c57c897
feat(cloudsearch): update the api https://github.com/googleapis/google-api-python-client/commit/b6310c5ea4221a69c71558b8911f817a99987b18
feat(container): update the api https://github.com/googleapis/google-api-python-client/commit/01aebc9962e09b7605975e2eee967ac9362bca24
feat(content): update the api https://github.com/googleapis/google-api-python-client/commit/47a79355df5a7e4a87cbaec761c3246abb121fe0
feat(dialogflow): update the api https://github.com/googleapis/google-api-python-client/commit/14e2dce00734d9b58456787bf14752e4b83d2381
feat(dns): update the api https://github.com/googleapis/google-api-python-client/commit/3e8173dcdf327abec4f7927cad565a4fdca7382d
feat(documentai): update the api https://github.com/googleapis/google-api-python-client/commit/fa101412c120778403c48795988e884a9d70f5ea
feat(domains): update the api https://github.com/googleapis/google-api-python-client/commit/9217f6280301716c31544762964c61dbae6deb9d
feat(iap): update the api https://github.com/googleapis/google-api-python-client/commit/178edbddc9ff2b40086d3e1dc1d30757986bca80
feat(managedidentities): update the api https://github.com/googleapis/google-api-python-client/commit/6c7bd384ce9e2e8504a5d97119fbd5bc1527f879
feat(osconfig): update the api https://github.com/googleapis/google-api-python-client/commit/89f87e5122b240ae364ece7ff5a70aa4da3c5d76
feat(redis): update the api https://github.com/googleapis/google-api-python-client/commit/5e0bac188a099153b52d63500667efc3790d8f9a
feat(retail): update the api https://github.com/googleapis/google-api-python-client/commit/8d4f2af1eb762bb626f94bde61614e482477c83a
feat(servicenetworking): update the api https://github.com/googleapis/google-api-python-client/commit/b74f86c26805582014e9c462a8a6a02321612a62
feat(speech): update the api https://github.com/googleapis/google-api-python-client/commit/1fe9ba81f62cf517597e12c86a6c0ba7613da7c2
feat(sqladmin): update the api https://github.com/googleapis/google-api-python-client/commit/1e3c477f32ceee89c347f322d2e5e54eb9cbebef
diff --git a/docs/dyn/deploymentmanager_alpha.operations.html b/docs/dyn/deploymentmanager_alpha.operations.html
index d16edb6..5e8a72e 100644
--- a/docs/dyn/deploymentmanager_alpha.operations.html
+++ b/docs/dyn/deploymentmanager_alpha.operations.html
@@ -160,7 +160,7 @@
 
 Args:
   project: string, The project ID for this request. (required)
-  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either `=`, `!=`, `>`, or `<`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: ``` (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake") ``` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: ``` (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true) ```
+  filter: string, A filter expression that filters resources listed in the response. The expression must specify the field name, an operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The operator must be either `=`, `!=`, `>`, `<`, `<=`, `>=` or `:`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. The `:` operator can be used with string fields to match substrings. For non-string fields it is equivalent to the `=` operator. The `:*` comparison can be used to test whether a key has been defined. For example, to find all objects with `owner` label use: ``` labels.owner:* ``` You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: ``` (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake") ``` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: ``` (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true) ```
   maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
   orderBy: string, Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name. You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first. Currently, only sorting by `name` or `creationTimestamp desc` is supported.
   pageToken: string, Specifies a page token to use. Set `pageToken` to the `nextPageToken` returned by a previous list request to get the next page of results.