feat(memcache)!: update the API

BREAKING CHANGE: This release has breaking changes.

#### memcache:v1beta2
The following keys were deleted:
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.description
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.flatPath
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.httpMethod
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.id
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameterOrder
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.options.requestedPolicyVersion.description
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.options.requestedPolicyVersion.format
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.options.requestedPolicyVersion.location
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.options.requestedPolicyVersion.type
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.resource.description
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.resource.location
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.resource.pattern
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.resource.required
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.parameters.resource.type
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.path
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.response.$ref
- resources.projects.resources.locations.resources.instances.methods.getIamPolicy.scopes
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.description
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.flatPath
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.httpMethod
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.id
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.parameterOrder
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.parameters.resource.description
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.parameters.resource.location
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.parameters.resource.pattern
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.parameters.resource.required
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.parameters.resource.type
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.path
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.request.$ref
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.response.$ref
- resources.projects.resources.locations.resources.instances.methods.setIamPolicy.scopes
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.description
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.flatPath
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.httpMethod
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.id
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.parameterOrder
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.parameters.resource.description
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.parameters.resource.location
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.parameters.resource.pattern
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.parameters.resource.required
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.parameters.resource.type
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.path
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.request.$ref
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.response.$ref
- resources.projects.resources.locations.resources.instances.methods.testIamPermissions.scopes
- schemas.AuditConfig.description
- schemas.AuditConfig.id
- schemas.AuditConfig.properties.auditLogConfigs.description
- schemas.AuditConfig.properties.auditLogConfigs.items.$ref
- schemas.AuditConfig.properties.auditLogConfigs.type
- schemas.AuditConfig.properties.service.description
- schemas.AuditConfig.properties.service.type
- schemas.AuditConfig.type
- schemas.AuditLogConfig.description
- schemas.AuditLogConfig.id
- schemas.AuditLogConfig.properties.exemptedMembers.description
- schemas.AuditLogConfig.properties.exemptedMembers.items.type
- schemas.AuditLogConfig.properties.exemptedMembers.type
- schemas.AuditLogConfig.properties.logType.description
- schemas.AuditLogConfig.properties.logType.enum
- schemas.AuditLogConfig.properties.logType.enumDescriptions
- schemas.AuditLogConfig.properties.logType.type
- schemas.AuditLogConfig.type
- schemas.Binding.description
- schemas.Binding.id
- schemas.Binding.properties.condition.$ref
- schemas.Binding.properties.condition.description
- schemas.Binding.properties.members.description
- schemas.Binding.properties.members.items.type
- schemas.Binding.properties.members.type
- schemas.Binding.properties.role.description
- schemas.Binding.properties.role.type
- schemas.Binding.type
- schemas.Expr.description
- schemas.Expr.id
- schemas.Expr.properties.description.description
- schemas.Expr.properties.description.type
- schemas.Expr.properties.expression.description
- schemas.Expr.properties.expression.type
- schemas.Expr.properties.location.description
- schemas.Expr.properties.location.type
- schemas.Expr.properties.title.description
- schemas.Expr.properties.title.type
- schemas.Expr.type
- schemas.Policy.description
- schemas.Policy.id
- schemas.Policy.properties.auditConfigs.description
- schemas.Policy.properties.auditConfigs.items.$ref
- schemas.Policy.properties.auditConfigs.type
- schemas.Policy.properties.bindings.description
- schemas.Policy.properties.bindings.items.$ref
- schemas.Policy.properties.bindings.type
- schemas.Policy.properties.etag.description
- schemas.Policy.properties.etag.format
- schemas.Policy.properties.etag.type
- schemas.Policy.properties.version.description
- schemas.Policy.properties.version.format
- schemas.Policy.properties.version.type
- schemas.Policy.type
- schemas.SetIamPolicyRequest.description
- schemas.SetIamPolicyRequest.id
- schemas.SetIamPolicyRequest.properties.policy.$ref
- schemas.SetIamPolicyRequest.properties.policy.description
- schemas.SetIamPolicyRequest.properties.updateMask.description
- schemas.SetIamPolicyRequest.properties.updateMask.format
- schemas.SetIamPolicyRequest.properties.updateMask.type
- schemas.SetIamPolicyRequest.type
- schemas.TestIamPermissionsRequest.description
- schemas.TestIamPermissionsRequest.id
- schemas.TestIamPermissionsRequest.properties.permissions.description
- schemas.TestIamPermissionsRequest.properties.permissions.items.type
- schemas.TestIamPermissionsRequest.properties.permissions.type
- schemas.TestIamPermissionsRequest.type
- schemas.TestIamPermissionsResponse.description
- schemas.TestIamPermissionsResponse.id
- schemas.TestIamPermissionsResponse.properties.permissions.description
- schemas.TestIamPermissionsResponse.properties.permissions.items.type
- schemas.TestIamPermissionsResponse.properties.permissions.type
- schemas.TestIamPermissionsResponse.type

The following keys were added:
- schemas.OperationMetadata.description
- schemas.OperationMetadata.id
- schemas.OperationMetadata.properties.apiVersion.description
- schemas.OperationMetadata.properties.apiVersion.type
- schemas.OperationMetadata.properties.cancelRequested.description
- schemas.OperationMetadata.properties.cancelRequested.type
- schemas.OperationMetadata.properties.createTime.description
- schemas.OperationMetadata.properties.createTime.format
- schemas.OperationMetadata.properties.createTime.type
- schemas.OperationMetadata.properties.endTime.description
- schemas.OperationMetadata.properties.endTime.format
- schemas.OperationMetadata.properties.endTime.type
- schemas.OperationMetadata.properties.statusDetail.description
- schemas.OperationMetadata.properties.statusDetail.type
- schemas.OperationMetadata.properties.target.description
- schemas.OperationMetadata.properties.target.type
- schemas.OperationMetadata.properties.verb.description
- schemas.OperationMetadata.properties.verb.type
- schemas.OperationMetadata.type